Evidence
Sources we can point to
Every current tool points to the method or official material it relies on. The GST Calculator additionally shows controlled policy versions, effective dates, authorities and the last verification date.
Current tool references
| Tool | Reference | Authority and dates | Supports |
|---|---|---|---|
| CAGR Calculator | Compound annual growth rate formula reference Investopedia · editorial | Investopedia Checked 8 August 2026 | Formula or standard reference |
| ROI Calculator | Return on investment definition and formula Investopedia · editorial | Investopedia Checked 8 August 2026 | Formula or standard reference |
| GST Calculator | Notification No. 09/2025-Central Tax (Rate) Central Board of Indirect Taxes and Customs · official | CBIC 09/2025-Central Tax (Rate) Published 17 September 2025 Effective 22 September 2025 Checked 8 August 2026 | post-reform rate schedule context · effective-date verification |
| GST Calculator | 56th GST Council meeting press release Goods and Services Tax Council · official | GST_COUNCIL Release ID 2163555 Published 3 September 2025 Effective 22 September 2025 Checked 8 August 2026 | headline rate structure · effective-date context · regulatory limitations |
| GST Calculator | GST Reforms 2025: Relief for Common Man, Boost for Businesses Press Information Bureau, Government of India · official | OTHER_GOVERNMENT Published 4 September 2025 Effective 22 September 2025 Checked 8 August 2026 | headline rate structure · classification limitation |
| GST Calculator | Nine Years of GST: Simplifying Taxation, Strengthening India Press Information Bureau, Government of India · official | OTHER_GOVERNMENT Published 30 June 2026 Effective 22 September 2025 Checked 8 August 2026 | current headline-rate verification · CGST/SGST and IGST context · special-rate exclusion |
| GST Calculator | GST Council April 2026 newsletter Goods and Services Tax Council · official | GST_COUNCIL 01/2026-Central Tax (Rate) Published 1 May 2026 Effective 1 May 2026 Checked 8 August 2026 | subsequent-update review · classification limitation |
| URL QR Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| URL QR Generator | URL Standard WHATWG · authoritative | WHATWG Checked 8 August 2026 | Formula or standard reference |
| UPI Standee Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| UPI Standee Generator | UPI QR key deep-linking parameters National Payments Corporation of India · official | National Payments Corporation of India Checked 8 August 2026 | Formula or standard reference |
| Letterhead Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| Payment Receipt Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| Business Card Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| Invoice Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| Invoice Number Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| Quotation Generator | CSS Paged Media Module Level 3 World Wide Web Consortium · authoritative | World Wide Web Consortium Checked 8 August 2026 | Formula or standard reference |
| GST Invoice Generator | Central Goods and Services Tax Rules · Rule 46 tax invoice particulars Central Board of Indirect Taxes and Customs · official | CBIC Rule 46 Checked 8 August 2026 | tax invoice particulars · invoice number format · inter-State place of supply |
| GST Invoice Generator | CBIC tax invoice, credit and debit note rules Central Board of Indirect Taxes and Customs · official | CBIC Tax invoice rules Checked 8 August 2026 | tax invoice field overview · invoice special cases |
| GST Invoice Generator | Circular No. 90/09/2019-GST · place of supply on inter-State invoices Central Board of Indirect Taxes and Customs · official | CBIC 90/09/2019-GST Published 18 February 2019 Checked 8 August 2026 | inter-State place of supply display |
| GST Invoice Generator | Central Goods and Services Tax Act · Section 31 tax invoice Central Board of Indirect Taxes and Customs · official | CBIC Section 31 Checked 8 August 2026 | tax invoice context · bill of supply distinction |
| GST Invoice Generator | Notification No. 09/2025-Central Tax (Rate) Central Board of Indirect Taxes and Customs · official | CBIC 09/2025-Central Tax (Rate) Published 17 September 2025 Effective 22 September 2025 Checked 8 August 2026 | post-reform rate schedule context · effective-date verification |
| GST Invoice Generator | 56th GST Council meeting press release Goods and Services Tax Council · official | GST_COUNCIL Release ID 2163555 Published 3 September 2025 Effective 22 September 2025 Checked 8 August 2026 | headline rate structure · effective-date context · regulatory limitations |
| GST Invoice Generator | GST Reforms 2025: Relief for Common Man, Boost for Businesses Press Information Bureau, Government of India · official | OTHER_GOVERNMENT Published 4 September 2025 Effective 22 September 2025 Checked 8 August 2026 | headline rate structure · classification limitation |
| GST Invoice Generator | Nine Years of GST: Simplifying Taxation, Strengthening India Press Information Bureau, Government of India · official | OTHER_GOVERNMENT Published 30 June 2026 Effective 22 September 2025 Checked 8 August 2026 | current headline-rate verification · CGST/SGST and IGST context · special-rate exclusion |
| GST Invoice Generator | GST Council April 2026 newsletter Goods and Services Tax Council · official | GST_COUNCIL 01/2026-Central Tax (Rate) Published 1 May 2026 Effective 1 May 2026 Checked 8 August 2026 | subsequent-update review · classification limitation |
| HRA Calculator | Rule 2A — House rent allowance exemption Income Tax Department · official | Income Tax Department Effective 1 April 1975 Checked 9 August 2026 | section 10(13A) HRA arithmetic · named city boundary · relevant period |
| HRA Calculator | Allowances allowable to a taxpayer Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | salary definition · turnover-based commission · eligibility boundary |
| HRA Calculator | CBDT e-Filing ITR-4 Validation Rules for AY 2026-27 Income Tax Department · official | Income Tax Department Published 15 May 2026 Effective 1 April 2025 Checked 9 August 2026 | section 10(13A) HRA arithmetic · 40%/50% salary cap · AY 2026-27 validation context |
| HRA Calculator | FAQs on New Tax vs Old Tax Regime Income Tax Department · official | Income Tax Department Effective 1 April 2023 Checked 9 August 2026 | tax-regime availability boundary · new-regime limitation |
| Margin Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Markup Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Break-even Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Pricing Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Cash Flow Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Burn Rate Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Runway Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| Marketplace Margin Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| ROAS Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| COD Cost Calculator | Business economics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | business economics formulas · rounding and scope limitations · estimate-only language |
| EMI Calculator | Finance calculation methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | EMI and amortization arithmetic · SIP and FD illustrations · XIRR dated-cash-flow solving · loan comparison assumptions and limitations |
| EMI Calculator | FAQs on reset of floating interest rate on equated monthly instalments Reserve Bank of India · official | Reserve Bank of India Checked 9 August 2026 | rate-reset disclosure · borrower-context limitations |
| SIP Calculator | Finance calculation methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | EMI and amortization arithmetic · SIP and FD illustrations · XIRR dated-cash-flow solving · loan comparison assumptions and limitations |
| SIP Calculator | SIP calculator Securities and Exchange Board of India · official | Securities and Exchange Board of India Checked 9 August 2026 | SIP illustration framing · no-guarantee wording |
| FD Calculator | Finance calculation methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | EMI and amortization arithmetic · SIP and FD illustrations · XIRR dated-cash-flow solving · loan comparison assumptions and limitations |
| XIRR Calculator | Finance calculation methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | EMI and amortization arithmetic · SIP and FD illustrations · XIRR dated-cash-flow solving · loan comparison assumptions and limitations |
| Loan Comparison | Finance calculation methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 9 August 2026 | EMI and amortization arithmetic · SIP and FD illustrations · XIRR dated-cash-flow solving · loan comparison assumptions and limitations |
| Loan Comparison | FAQs on reset of floating interest rate on equated monthly instalments Reserve Bank of India · official | Reserve Bank of India Checked 9 August 2026 | rate-reset disclosure · borrower-context limitations |
| Income Tax Calculator | Salaried Individuals for AY 2026-27 Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | individual slabs · rebate · surcharge · health and education cess |
| Income Tax Calculator | Income and Tax Calculator user guidance Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | applicable Act selection · tax period selection · supported income and deductions |
| TDS Calculator | TDS compliance transition guidance Income Tax Department · official | Income Tax Department Effective 1 April 2026 Checked 9 August 2026 | TDS transition · credit/payment trigger · new Act section mapping |
| TDS Calculator | Income-tax rates and TDS rate table Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | TDS rates · rate-table context |
| Corporate Tax Calculator | Domestic Company for AY 2026-27 Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | domestic-company regimes · surcharge · cess · MAT warning |
| Presumptive Tax Calculator | ITR-4 Sugam FAQs for AY 2026-27 Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | 44AD · 44ADA · 44AE · turnover and receipt thresholds |
| CTC Calculator | EPFO frequently asked questions Employees Provident Fund Organisation · official | Employees Provident Fund Organisation Checked 9 August 2026 | EPF 12% · EPS 8.33% · EDLI 0.5% · ₹15,000 wage ceiling |
| CTC Calculator | FAQs on Labour Codes Ministry of Labour and Employment · official | Ministry of Labour and Employment Effective 21 November 2025 Checked 9 August 2026 | gratuity events · five-year rule · fixed-term one-year rule · 15-day wage method |
| In-hand Salary Calculator | Salaried Individuals for AY 2026-27 Income Tax Department · official | Income Tax Department Effective 1 April 2025 Checked 9 August 2026 | individual slabs · rebate · surcharge · health and education cess |
| In-hand Salary Calculator | TDS compliance transition guidance Income Tax Department · official | Income Tax Department Effective 1 April 2026 Checked 9 August 2026 | TDS transition · credit/payment trigger · new Act section mapping |
| In-hand Salary Calculator | EPFO frequently asked questions Employees Provident Fund Organisation · official | Employees Provident Fund Organisation Checked 9 August 2026 | EPF 12% · EPS 8.33% · EDLI 0.5% · ₹15,000 wage ceiling |
| PF Calculator | EPFO frequently asked questions Employees Provident Fund Organisation · official | Employees Provident Fund Organisation Checked 9 August 2026 | EPF 12% · EPS 8.33% · EDLI 0.5% · ₹15,000 wage ceiling |
| Gratuity Calculator | FAQs on Labour Codes Ministry of Labour and Employment · official | Ministry of Labour and Employment Effective 21 November 2025 Checked 9 August 2026 | gratuity events · five-year rule · fixed-term one-year rule · 15-day wage method |
| CAC Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| LTV Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| SaaS Metrics Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| Startup Valuation Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| Startup Valuation Calculator | Companies Act, 2013 — Section 62 further issue of share capital India Code · official | India Code Checked 10 August 2026 | further issue context · corporate approval boundary |
| Startup Valuation Calculator | Startup Playbook for DPIIT-recognised startups Startup India · official | Startup India Checked 10 August 2026 | startup context · ESOP eligibility boundary |
| Equity Dilution Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| Equity Dilution Calculator | Companies Act, 2013 — Section 62 further issue of share capital India Code · official | India Code Checked 10 August 2026 | further issue context · corporate approval boundary |
| ESOP Calculator | Startup and SaaS metrics methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | startup metrics definitions · scenario boundaries · period consistency |
| ESOP Calculator | Salary perquisites including ESOPs Income Tax Department · official | Income Tax Department Checked 10 August 2026 | ESOP perquisite context · FMV and exercise-price boundary |
| ESOP Calculator | Companies Act, 2013 — Section 62 further issue of share capital India Code · official | India Code Checked 10 August 2026 | further issue context · corporate approval boundary |
| ESOP Calculator | Startup Playbook for DPIIT-recognised startups Startup India · official | Startup India Checked 10 August 2026 | startup context · ESOP eligibility boundary |
| Amazon Fees Calculator | Amazon.in seller fees and pricing Amazon Seller Services Private Limited · official | Amazon Seller Services Private Limited Effective 16 March 2026 Checked 10 August 2026 | Amazon fee categories · closing-fee price bands · GST on displayed fees |
| Flipkart Fees Calculator | Flipkart seller fees and commission Flipkart · official | Flipkart Effective 1 January 2026 Checked 10 August 2026 | FBF/NFBF fixed-fee bands · commission and collection fee caveat · seller-dashboard verification |
| Business Name Assistant | AI assistant boundary and safety methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | AI boundary · review-first export · deterministic fallback |
| Business Name Assistant | Gemini API structured outputs Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | structured response schema · server-side provider request |
| Business Name Assistant | Groq structured outputs and supported models Groq · official | Groq Checked 10 August 2026 | structured response schema · server-side provider request |
| Business Name Assistant | Digital Personal Data Protection Rules 2025 Ministry of Electronics and Information Technology · official | Ministry of Electronics and Information Technology Checked 10 August 2026 | privacy notice · consent · security and retention boundary |
| Business Name Assistant | Zero data retention in the Gemini Developer API Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Business Name Assistant | Your Data in GroqCloud Groq · official | Groq Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Pricing Assistant | AI assistant boundary and safety methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | AI boundary · review-first export · deterministic fallback |
| Pricing Assistant | Gemini API structured outputs Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | structured response schema · server-side provider request |
| Pricing Assistant | Groq structured outputs and supported models Groq · official | Groq Checked 10 August 2026 | structured response schema · server-side provider request |
| Pricing Assistant | Digital Personal Data Protection Rules 2025 Ministry of Electronics and Information Technology · official | Ministry of Electronics and Information Technology Checked 10 August 2026 | privacy notice · consent · security and retention boundary |
| Pricing Assistant | Zero data retention in the Gemini Developer API Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Pricing Assistant | Your Data in GroqCloud Groq · official | Groq Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Startup Cost Estimator | AI assistant boundary and safety methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | AI boundary · review-first export · deterministic fallback |
| Startup Cost Estimator | Gemini API structured outputs Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | structured response schema · server-side provider request |
| Startup Cost Estimator | Groq structured outputs and supported models Groq · official | Groq Checked 10 August 2026 | structured response schema · server-side provider request |
| Startup Cost Estimator | Digital Personal Data Protection Rules 2025 Ministry of Electronics and Information Technology · official | Ministry of Electronics and Information Technology Checked 10 August 2026 | privacy notice · consent · security and retention boundary |
| Startup Cost Estimator | Zero data retention in the Gemini Developer API Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Startup Cost Estimator | Your Data in GroqCloud Groq · official | Groq Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Business Plan Assistant | AI assistant boundary and safety methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | AI boundary · review-first export · deterministic fallback |
| Business Plan Assistant | Gemini API structured outputs Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | structured response schema · server-side provider request |
| Business Plan Assistant | Groq structured outputs and supported models Groq · official | Groq Checked 10 August 2026 | structured response schema · server-side provider request |
| Business Plan Assistant | Digital Personal Data Protection Rules 2025 Ministry of Electronics and Information Technology · official | Ministry of Electronics and Information Technology Checked 10 August 2026 | privacy notice · consent · security and retention boundary |
| Business Plan Assistant | Zero data retention in the Gemini Developer API Google AI for Developers · official | Google AI for Developers Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Business Plan Assistant | Your Data in GroqCloud Groq · official | Groq Checked 10 August 2026 | provider retention notice · data-control disclosure |
| Percentage Calculator | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Discount Calculator | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Area Converter | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Business Days Calculator | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Fuel Expense Calculator | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Volumetric Weight Calculator | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Word and Character Counter | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| Password Toolkit | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| To-do Checklist | Everyday Utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | everyday utility formulas · rounding and scope limitations · privacy boundary |
| WhatsApp Link Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| WhatsApp Link Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| vCard QR Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| vCard QR Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| Wi‑Fi QR Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Wi‑Fi QR Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| Barcode Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Barcode Generator | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| QR & Barcode Scanner | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| QR & Barcode Scanner | QR Code two-dimensional symbol overview DENSO WAVE · authoritative | DENSO WAVE Checked 8 August 2026 | Formula or standard reference |
| Photo Resizer & Compressor | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| PDF Merge & Split | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Digital Signature Draw & Sign | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Email Signature Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Review Request Builder | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Favicon & App Icon Generator | Sharing and file utilities methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 10 August 2026 | payload escaping · file limits · safe decoded-content handling · local-only boundary |
| Price Tag Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Delivery Challan Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Shipping Label Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Purchase Order Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Menu Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Wage Slip Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Wage Slip Generator | Ministry of Labour and Employment — official information portal Ministry of Labour and Employment, Government of India · official | Ministry of Labour and Employment, Government of India Checked 11 August 2026 | Formula or standard reference |
| Rent Receipt Generator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Rent Receipt Generator | Income Tax Department — official information portal Income Tax Department, Government of India · official | Income Tax Department, Government of India Checked 11 August 2026 | Formula or standard reference |
| Notice Period Calculator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| Leave Balance Calculator | Retail, document and workplace operations methodology v1 KarobarKit controlled methodology · authoritative | KarobarKit controlled methodology Checked 11 August 2026 | document profiles · declared arithmetic · local-only execution boundary |
| HSN/SAC Reference Samples | CBIC GST goods and services reference portal Central Board of Indirect Taxes and Customs · official | CBIC Checked 11 August 2026 | Formula or standard reference |
| GST Filing Due-date Calendar | GST Portal advisory on the Quarterly Return Monthly Payment scheme Goods and Services Tax Network · official | GST_PORTAL Checked 11 August 2026 | Formula or standard reference |
| Depreciation Calculator | Companies Act and Schedule II reference material Ministry of Corporate Affairs · official | MCA Checked 11 August 2026 | Formula or standard reference |
| Depreciation Calculator | Income Tax allowances allowable to taxpayers — Section 32 Income Tax Department, Ministry of Finance · official | INCOME_TAX_DEPARTMENT Checked 11 August 2026 | Formula or standard reference |
| Maharashtra Professional Tax Calculator | Profession Tax and Other Rate Schedule Maharashtra Goods and Services Tax Department · official | MAHAGST Checked 11 August 2026 | Formula or standard reference |
| MSME Late-payment Interest Calculator | Delayed Payments to Micro and Small Enterprises Ministry of Micro, Small and Medium Enterprises · official | MSME Checked 11 August 2026 | Formula or standard reference |
| MSME Late-payment Interest Calculator | Reserve Bank of India rates and notifications Reserve Bank of India · official | RBI Checked 11 August 2026 | Formula or standard reference |
| Currency Converter | Euro foreign exchange reference rates European Central Bank · official | ECB Checked 11 August 2026 | Formula or standard reference |
What “checked” means
A checked date means the reference link and the formula description were reviewed for this release. It is not a claim that a standard financial ratio answers every business or investment question.
Reviewer status is shown separately on each tool. “External review pending” is not approval; it is an explicit unresolved governance state for higher-risk workflows.
GST policy note
The GST Calculator uses only the current, source-backed headline presets documented in its policy bundle. It does not claim that a rate applies to a product or service, and it excludes classification, exemption, place-of-supply and filing decisions.