Can I legally add interest to an unpaid invoice?

Asked by: Prof. Lyla Cruickshank Sr.  |  Last update: July 27, 2026
Score: 4.5/5 (70 votes)

Can you legally charge interest on overdue invoices? Yes!

Can I legally charge interest on unpaid invoices?

In short, yes! As a vendor, it's entirely legal for you to charge interest on unpaid invoices. However, the real question is whether your clients are legally obligated to pay it. A vendor should include these details in a contract or statement of work agreement before any work begins.

Can you claim interest on unpaid invoices?

Yes, you can charge both late payment fees and interest on overdue invoices if these charges are clearly stated in your contract or terms of trade. However, ensure that they comply with relevant laws.

Can I charge interest on an unpaid debt?

Generally speaking, late fees on invoices should be capped at around 10% annually, with the interest broken down into a monthly charge. For example, if you're charging 10% interest on a $5,000 invoice, the annual interest rate would be $500, which means that the monthly interest would be $41.67.

When can you start charging interest on an unpaid invoice?

When a payment becomes late. You can claim interest and debt recovery costs if another business is late paying for goods or a service. If you agree a payment date, it must usually be within 30 days for public authorities or 60 days for business transactions.

An Expert Guide for Adding Interest to Overdue Invoices📃

29 related questions found

How much interest can you add to an unpaid bill?

Can I charge interest on a late payment? Yes. The amount you can charge is called 'statutory interest' and is calculated as 8% plus the Bank of England base rate.

What can I do if someone doesn't pay an invoice?

Steps you can take to get paid

  1. Contact the client. ...
  2. Send an unpaid invoice notification. ...
  3. Start charging interest. ...
  4. Arrange a payment plan. ...
  5. Issue a final reminder. ...
  6. Use a mediator to settle the unpaid invoice. ...
  7. Issue a statutory demand. ...
  8. Make a court claim.

Is it legal to charge interest on collections?

Debt collectors may collect interest, fees, charges, or other expenses to your debt only if they are expressly authorized by the agreement creating the debt or are otherwise permitted by law. If you ask, the debt collector must tell you how much it is charging you and why.

What is the maximum amount you can legally charge on overdue invoice payments?

Bear in mind that under section 347 of the Criminal Code , charging interest at an effective annual rate of more than 60% is a criminal offence. The effective rate is calculated by considering not only the interest rate, but also any fees, fines, penalties or other charges claimed from the debtor.

What is the 7 7 7 rule for collections?

No More Than Seven Times in a Seven-Day Period

Under the 7-in-7 Rule, debt collectors are restricted to contacting a consumer no more than seven times within any seven days. This rule applies to all communication methods, whether phone calls, emails, text messages, or other forms of contact.

Can I sue for unpaid invoices?

Amount in dispute: According to the California Courts Self-Help Guide, if the unpaid invoice is under $12,500, you may qualify for small claims court. Documentation: You'll need to present contracts, invoices, communications, and any proof of delivery of goods or services.

How to resolve an unpaid invoice?

What to do when you haven't been paid

  1. 1 Review the terms of your contract. If you have a written contract, the first thing to do is to read it carefully. ...
  2. 2 Send a reminder. ...
  3. 3 Send a letter of demand. ...
  4. 4 Get help with dispute resolution. ...
  5. 5 Use a debt collection agency. ...
  6. 6 Take legal action.

Can a business write off unpaid invoices?

As a business, you can write off unpaid invoices under specific circumstances. This is typically when all reasonable collection efforts have been exhausted and the debt is deemed uncollectible. The process of writing off an invoice as bad debt is beneficial as it can lead to a reduction in your taxable income.

Can I charge interest on an outstanding debt?

If a payment is partially made, you're still entitled to claim interest on the remaining amount outstanding. The same rate of interest, whether that's the statutory rate or a contractually agreed rate, will apply to the unpaid portion of the debt and in the same way, will accumulate daily until it's cleared in full.

What is the $8 late fee rule?

The rule had reduced the safe harbor limits on late fees that could be charged by large credit card issuers (those with over one million open accounts) from over $30 down to $8. The rule also forbade fee increases for repeat violations and removed the annual inflation indexing.

How to pursue an unpaid invoice?

If you have an unpaid invoice, here are some steps you can take to try and resolve the situation:

  1. Check the Payment Terms. ...
  2. Send a Polite Reminder. ...
  3. Contact the Client Directly. ...
  4. Resend the Invoice. ...
  5. Charge Late Fees. ...
  6. Set Up a Payment Plan. ...
  7. Issue a Final Demand Letter. ...
  8. Consider Legal Action or a Collection Agency.

How much interest can you add to unpaid invoices?

Adding Late Payment Interest

You can add 8% interest above the bank base rate to an overdue invoice from the day after the invoice became overdue. Work out the interest on each invoice outstanding to you if multiple invoices are overdue. Add interest to the the gross amount of the debt overdue, including VAT.

What is the legal interest rate?

The rate of interest upon a judgment rendered in any court of this State shall be set by the Legislature at not more than 10 percent per annum. Such rate may be variable and based upon interest rates charged by federal agencies or economic indicators, or both.

How much interest can I charge on unpaid invoices?

What is the standard late payment interest on an invoice? The late payment fees for overdue invoices can vary between 1% to 3%. Because the government doesn't regulate a business' late payment fee, you can, in theory, charge whatever payment interest rate you see fit.

Can interest be added to a debt?

Lenders add interest to most debts. They also add extra charges if you do not pay on time. They cannot increase the rate of interest because you miss payments.

What is the 11 word phrase to stop debt collectors?

Use this 11-word phrase to stop debt collectors: “Please cease and desist all calls and contact with me immediately.” You can use this phrase over the phone, in an email or letter, or both.

Can you charge someone interest if they owe you money?

Some state laws and some contracts allow interest to be charged and costs to be added. If you still have the contract, it may say what interest rate can be charged or how much it can increase. State law may also limit the amount of interest charged.

How do I force someone to pay an invoice?

The sending of a letter before action or a statutory demand may in many cases be a cost effective way to resolve the dispute in a timely fashion and avoid the need for court proceedings. If, however, this does not bring about recovery of the sum owed, court action to recover the monies owed may need to be considered.

Do I legally have to pay an invoice?

Payment - obligations

Unless you agree a payment date, the customer must pay you within 30 days of getting your invoice or the goods or service. You can use a statutory demand to formally request payment of what you're owed.

How long should you wait for someone to pay an invoice?

A business owner can set their own payment terms when it comes to invoicing. They can choose to offer discounts for early payments and payment upfront. If no agreed-upon payment date has been established, a customer must pay a company within 30 days of receiving an invoice or the goods or service.