KarobarKit
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Business · Data flow disclosed · Beta

MSME Late-payment Interest Calculator

Illustrate delayed-payment interest arithmetic after a separately declared MSME eligibility check.

Instant result•No account•Inputs stay in your browser
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Trust record

Check the method before you rely on the result

Tier D · Runs locally with reviewed bundled data
Method
Use a declared acceptance date, maximum agreed period, bank rate and monthly-rest illustration; eligibility is reported separately.
Reference interest = principal × [(1 + 3 × bank rate ÷ 12)^full months − 1] plus remainder-day interest
Sources
2 reviewed references · 2 official
Open the source register
Effective period
Formula-based; no statutory effective period
Last verified
11 August 2026
Review every 90 days
Reviewer status
Named policy and professional reviewer: external review pending
Privacy
Inputs and bundled policy data stay in this browser. They are not sent to analytics, a backend, a URL or a log, and are not saved by default.
Important limitations
  • The result does not determine MSE status, acceptance, written terms, bank rate or dispute process.
  • One declared bank-rate snapshot is used; later rate changes across a long overdue period are not modelled.

Read all limitationsReport an error

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A quick guide

Use the number with context

The answer is only useful when you know what it includes and what it leaves out.

How to use it

  1. Enter principal, invoice/acceptance dates and payment date.
  2. Enter the declared bank rate, its effective date and enterprise type.
  3. Review eligibility status and arithmetic separately before seeking advice.

Formula

Reference interest = principal × [(1 + 3 × bank rate ÷ 12)^full months − 1] plus remainder-day interest

The output is a scenario estimate and does not create a demand, claim or legal entitlement.

Make it concrete

Worked example

A micro enterprise with a 45-day agreed period shows overdue days only after the reference due date.

Boundaries

What this tool does not assume

Limitations

  • The result does not determine MSE status, acceptance, written terms, bank rate or dispute process.
  • One declared bank-rate snapshot is used; later rate changes across a long overdue period are not modelled.
  • Trading and unknown enterprise types are not treated as eligible by default.

Edge cases

  • Agreed payment days are capped at 45.
  • On-time payment produces zero estimated interest.

Last reviewed 11 August 2026 · Formula version 1.0

Method & sources

How this result is grounded

The formula is deterministic and runs in your browser. Read the reference below for the method used by this tool.

Questions

Frequently asked

Does this file an MSME claim?

No. It only illustrates user-entered interest assumptions.

Keep going

Related tools

A related local-first tool for the next step.

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Source register checked 11 August 2026.