What late fee can a small business legally charge?

Whatever your agreed terms specify, up to the usury limit in your jurisdiction. Commercial-to-commercial rates are typically less restricted than consumer ones. 1% to 2% per month is the normal band; the enforceability question is almost always about whether the customer agreed to it, not whether the number is too high.

Should I charge late fees to my best customers?

Have the policy apply to everyone, then exercise judgement about enforcement. A long-standing customer who is three days late does not need a fee; one who is habitually 60 days late is financing their business with your money regardless of how much they order. Waiving a fee as a goodwill gesture is much easier when the policy exists.

Do late fees actually get paid?

Often the fee itself is settled or waived in negotiation — but that is not the point. Its value is in moving your invoice up the payment queue and in giving you something concrete to trade for immediate payment. Businesses that charge fees consistently report shorter average collection periods even when they waive many of the fees.

When should I hand an invoice to a collections agency?

Generally between 90 and 120 days past due, once your own sequence is exhausted. Expect to give up 25% to 50% of the balance in commission. Weigh that against small-claims court, which is cheaper for clear-cut debts within its monetary limit but costs you time.

Can I charge a late fee and interest at the same time?

You can if your terms provide for both — commonly a flat administrative charge at the first missed deadline plus monthly interest thereafter. Make the structure explicit in your terms, and avoid stacking charges to a level a court would view as a penalty rather than compensation.

Late Fee Calculator for Small Business

For a small business, a late invoice is a financing problem before it is a revenue problem. You have already paid for the materials, the wages and the overhead; the customer's delay means you are funding their working capital out of yours. A late fee is partly compensation for that and partly a signal about where your invoice sits in their payment queue.

Enter the balance, days past due and your rate to get the fee and the updated total. Then use the sections below to work out where the fee fits in a collections process — because the businesses that get paid on time are rarely the ones with the highest late fees. They are the ones with the most consistent follow-up.

Overdue amount

Currency

Days past due

Grace period (days)

Days your terms allow before fees start.

Fee type

Rate

1.5% per month is the common business default.

Compound the interestOnly tick this if your contract says fees accrue on unpaid fees. Simple interest is the commercial norm.

Late fee

$74.75

Accrued over 23 chargeable days.

Original balance: $6,500.00
Total now due: $6,574.75
Cost per additional day: $3.25
Effective annual rate: 18%

Late fees are only enforceable if they appear in terms your client agreed to, and maximum rates are capped by local usury law. This is an estimate, not legal advice.

Starting values are set for a typical small business scenario — change any field to match yours. Need the plain version? Invoice Late Fee Calculator.

What a late invoice actually costs you

The fee should at minimum cover your cost of carrying the receivable. If you are drawing on a line of credit at 12% a year, or worse, factoring invoices at an effective rate well above that, a 12% annual late fee leaves you no better than break-even on the delay.

Monthly carrying cost of a $10,000 overdue invoice
How you fund the gap	Indicative annual cost	Cost per month of delay
Business line of credit	10% to 14%	$83 to $117
Business credit card	18% to 26%	$150 to $217
Invoice factoring	20% to 40% effective	$167 to $333
Delaying your own suppliers	Lost early-payment discounts, damaged terms	Hard to quantify, easy to underestimate

A 1.5% monthly late fee recovers $150 on a $10,000 invoice — roughly the cost of carrying it on a card, and less than factoring.

A collections sequence that works

Consistency does more than severity. Decide the schedule once, apply it to every customer, and let the process rather than your mood drive the escalation.

Day −3: a short courtesy note before the due date. This alone resolves a surprising share of late payments, because most are administrative rather than deliberate.
Day 1 to 5: grace period. Do not charge yet, but log it.
Day 7: first reminder, restating the terms and noting that interest now accrues.
Day 21: statement showing the accrued fee and the running daily cost, sent to a named individual in accounts payable rather than a generic inbox.
Day 30: place the account on hold. No new orders, no new work. This is the step most small businesses skip, and it is the one customers respond to.
Day 45 to 60: decide — payment plan, collections agency, or small-claims court. Do not let an invoice drift past 90 days without a decision; recovery rates fall sharply.

Terms that reduce late payment before it happens

Shorten the terms. Net 30 is convention, not law. Net 14 on new accounts is entirely normal.
Offer an early-payment discount as well as a late fee — 2/10 net 30 gives a 2% discount for paying within 10 days. Some customers respond far better to a carrot.
Run a credit check on new commercial accounts above a threshold you set, and start them on smaller limits.
Take card or ACH details up front for recurring work, with authorisation to charge on the due date.
Require a deposit from any customer who has previously paid more than 30 days late. Payment history is the most reliable signal you have.

Frequently asked questions

What late fee can a small business legally charge?: Whatever your agreed terms specify, up to the usury limit in your jurisdiction. Commercial-to-commercial rates are typically less restricted than consumer ones. 1% to 2% per month is the normal band; the enforceability question is almost always about whether the customer agreed to it, not whether the number is too high.
Should I charge late fees to my best customers?: Have the policy apply to everyone, then exercise judgement about enforcement. A long-standing customer who is three days late does not need a fee; one who is habitually 60 days late is financing their business with your money regardless of how much they order. Waiving a fee as a goodwill gesture is much easier when the policy exists.
Do late fees actually get paid?: Often the fee itself is settled or waived in negotiation — but that is not the point. Its value is in moving your invoice up the payment queue and in giving you something concrete to trade for immediate payment. Businesses that charge fees consistently report shorter average collection periods even when they waive many of the fees.
When should I hand an invoice to a collections agency?: Generally between 90 and 120 days past due, once your own sequence is exhausted. Expect to give up 25% to 50% of the balance in commission. Weigh that against small-claims court, which is cheaper for clear-cut debts within its monetary limit but costs you time.
Can I charge a late fee and interest at the same time?: You can if your terms provide for both — commonly a flat administrative charge at the first missed deadline plus monthly interest thereafter. Make the structure explicit in your terms, and avoid stacking charges to a level a court would view as a penalty rather than compensation.