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Late Payment Fee Calculator

Free Canadian late payment fee calculator • no signup • updated October 2026

Calculate a fair late fee on an overdue invoice using a flat fee or a percentage, and see the new total. Free tool for Canadian businesses.

Late Payment Fee Calculator

Free to use, no signup. Turn the result into an invoice ›

How the calculation works

01

Enter your amount

Type the figure the calculation starts from, such as a price, invoice amount or receipt total.

02

Set the rate or options

Choose your province, or enter the rate, term or options the calculation needs.

03

Read the result

See the full breakdown and total, then turn it into a professional invoice in one click.

The formula
Fee = Amount x fee% (or flat). New total = Amount + Fee

A worked example

Second example: a 2% fee on a $2,500 overdue invoice is $50, making the new total $2,550.

What is the late payment fee?

What is the late payment fee. In Canada, that means being specific about tax and terms so clients know exactly what to pay. See the related FacilInvoice tool below to do this in a couple of clicks.

How to use this calculator

How to use this calculator. Here is how it works in practice, with the Canadian rules that apply.

How late payment fee is calculated

How late payment fee is calculated. Keeping this clear is what gets you paid faster and keeps you compliant.

The formula

The formula.

A worked example

A worked example.

late payment fee in Canada (by province where relevant)

late payment fee in Canada (by province where relevant). In Canada, that means being specific about tax and terms so clients know exactly what to pay.

Other tools

Canadian Sales Tax Calculator
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Quebec Sales Tax Calculator (GST + QST)
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Canadian Income Tax Calculator
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References
Canada Revenue Agency (CRA)

Verify current rates with the source above before relying on a figure.

Frequently asked questions

How do I calculate late payment fee?

Enter your figures in the Late Payment Fee Calculator and it returns the result instantly using the standard formula, applying the correct Canadian rate wherever tax is involved. You see the full breakdown and the total without doing the math by hand, and you can turn the result into an invoice in one click.

Is the Late Payment Fee Calculator accurate and up to date for Canada?

Yes. It uses current Canadian rates and standard formulas, so it is reliable for quoting, pricing and planning. Rates change from time to time, so for a final invoice confirm the current figure for your province with the CRA or Revenu Quebec.

Is the Late Payment Fee Calculator free, and do I need an account?

It is completely free with no signup and no usage limit. You only create a FacilInvoice account if you want to turn the result into a professional invoice and send, track or get paid online.

Does the Late Payment Fee Calculator work for every province?

Yes. It covers all Canadian provinces and territories and applies GST, HST, PST or QST correctly, so freelancers and small businesses anywhere in Canada get the right number.

Can I use this calculator on my phone?

Yes. It runs in any mobile browser, so you can calculate a quote or a tax amount on the job site and invoice the client right after. Nothing to install and no account needed to use it.

Is my data saved or shared?

No. The calculator runs entirely in your browser and stores nothing, so your numbers stay private. You only create a FacilInvoice account if you choose to turn a result into an invoice and send or track it.

All FacilInvoice calculators

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