Can I legally charge interest on unpaid invoices?

Asked by: Nestor Kohler  |  Last update: July 3, 2026
Score: 4.4/5 (55 votes)

Yes, you can legally charge interest on overdue invoices, but it's only enforceable if your payment terms and conditions clearly state the policy, including the rate and when it applies, and you must comply with your state's usury laws (limits on maximum interest). You need to include this clause in your contracts and on your invoices, and it's wise to offer a grace period and consult legal counsel to ensure compliance.

Can you charge interest on an unpaid invoice?

You can charge interest and compensation on any invoices which have been paid late or have not been paid within your agreed payment terms.

Is it legal to charge interest on unpaid invoices?

Can you legally charge interest on overdue invoices? Yes! However, our investigation demonstrated that customers are not obligated to settle a late payment fee if it isn't indicated in the contract terms.

Is it legal to charge interest on overdue 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.

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.

Q494. How can I charge Interest to unpaid Invoices for client matter's in uLaw?

37 related questions found

Is it illegal to charge 3% credit card fee?

Yes, charging a 3% credit card fee (surcharge) is generally legal in most U.S. states and follows card network rules (like Visa's 3% cap), but it depends heavily on your location and requires strict adherence to rules, such as not surcharging debit cards, capping it at your actual processing cost (not to exceed 3% for Visa/4% for Mastercard), and providing clear customer notification. Some states (like Connecticut, Massachusetts, Texas) may have their own bans or restrictions, so it's crucial to check your specific state laws.

Can you legally charge a late payment fee?

Yes, late payment fees are perfectly legal.

Can you refuse to pay old invoices?

In general, clients cannot refuse to pay late invoices if they have received goods or services as agreed upon in the contract or agreement. Late invoicing doesn't absolve them of their payment obligation.

What is the 7 7 7 rule for collections?

The "777 rule" in debt collection, also known as the 7-in-7 rule, is a CFPB regulation (Regulation F) limiting calls: collectors can't call more than 7 times in 7 days for a specific debt, nor call within 7 days of a conversation about that debt. It aims to prevent harassment, applying to calls, texts, and emails, though exceptions exist, and the presumption of compliance can be rebutted by aggressive call patterns like rapid succession or highly concentrated calls.

Are collections allowed to charge interest?

A debt collector may not collect any interest or fee not authorized by the agreement or by law. The interest rate or fees charged on your debt may be raised if your original loan or credit agreement permits it. Some state laws and some contracts allow interest to be charged and costs to be added.

Can you be sued for not paying an invoice?

Filing a Lawsuit for Breach of Contract

If your client agreed to pay for goods or services and failed to follow through, they may be in breach of contract. You have the right to sue for the amount owed, and possibly additional damages, depending on your contract and the impact of the missed payment.

Is 30% interest rate legal?

Yes, a 30% interest rate (APR) is generally legal for many types of credit in the U.S., especially credit cards, as there's no federal cap, though some states and specific loans (like for military families) have limits, and some retail cards even exceed 30%. While federal laws don't set a universal limit, state usury laws often apply to other loans, but credit cards are frequently exempt or fall under state laws that allow high rates, like in Delaware or South Dakota.

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.

Can you legally charge interest on overdue invoices?

Yes, you have the legal right to charge late fees on your invoices. To make sure you can do this properly, you need to have a clear and fair late fee clause in your contracts. This clause should explain when late fees will be applied and how much they'll be, and it should follow the law in your area.

What to do if someone doesn't pay my 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.

What is the 11 word phrase to stop debt collectors?

The 11-word phrase often cited to stop debt collectors is "Please cease and desist all calls and contact with me, immediately," which leverages your rights under the Fair Debt Collection Practices Act (FDCPA) to halt most communication, though it must be sent in writing via certified mail to be legally binding, and collectors can still notify you of lawsuits. 

How long can you chase an unpaid invoice?

It might surprise many companies that unpaid invoices, under a simple contract, can be legitimately chased for up to 6 years. Legal proceedings would need to be issued within 6 years of the date of the invoice to prevent any claim from being statute barred.

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.

Should I pay a 2 year old invoice?

How long does an unpaid invoice remain valid for collection? Under the Limitation Act 1980, invoices remain valid for up to six years from the date the customer last acknowledged the debt or made a partial payment.

What happens if invoice is not paid after 30 days?

30+ days late

If your client hasn't made payment (or meaningful contact) within 30 days of the invoice becoming due, it may be time to issue a letter before action (LBA), or to pass over the matter to a debt collection agency. An LBA gives your client formal notice that legal action is imminent.

How long before a payment is considered overdue?

After 30 days, generally, the late payment will appear on your credit report. Late payments generally stay on your credit report for 7 years from the date of the missed payment, though the older a late payment is, the less of an impact it typically has on your credit score.