How Should a Small Business Collect Late Payments?

By Bill Stilwell · Last reviewed October 17, 2026

The short answer

Write your collection steps before anyone is late, then follow them the same way every time: a friendly reminder, a firmer notice, a phone call, and a final notice. Charge late fees or interest only if your signed terms allow them and your state permits them. If you hire a collection agency or collect under a different name, federal debt collection law can apply, so talk to an attorney first.

What this means

A late payment is any amount not paid by the due date in your terms. Collections are the steps you take to get it paid. A late payment often means the customer forgot or is short on cash, not that they refuse to pay.

Say Ironwood Fence Company invoices on completion with 15 days to pay. Their written steps: a friendly email reminder the day after the due date, another at 10 days late, a phone call at 20 days, and a final written notice at 30 days that names the next step. The late fee in their signed contract is applied only after the final notice, exactly as the contract says.

Why it matters

Cash flow. Unpaid invoices can sink a small business that’s profitable on paper (see 24.2 Cash Flow Forecast).
Legal risk. Late fees not in your terms, threats, or telling other people about someone’s debt can create legal problems.
Reviews. Aggressive collection is a common trigger for angry public reviews.
Consistency. Treating customers differently invites complaints of unfairness.

Who this applies to

Any business that lets customers pay after the work, sends invoices with due dates, or offers payment plans. Businesses that take full payment up front rarely need more than a basic version.

How to do it

Put payment terms in writing before the work starts: due date, accepted methods, and any late fee or interest (see 11.1.6 Payment Terms). Ask an attorney whether your fee is allowed in your state.
Write your collection steps and timing, such as reminder, second reminder, call, and final notice.
Use your invoicing software to send reminders automatically and flag overdue invoices (see 10.5.6 Accounts Receivable).
Call before you escalate. A friendly call or a payment plan can solve the problem before it grows.
Put any payment plan in writing with dates and amounts.
Send a final written notice that states the amount, what it’s for, and the next step.
Decide your next step with an attorney’s input: writing it off, small claims court, a lien where your state allows it for your trade, or a collection agency. Rules and deadlines for these vary by state.
Never threaten actions you won’t or can’t take, never discuss the debt with anyone but the customer (or their lawyer), and stay polite.
If a customer posts a review about the dispute, reply briefly and calmly without sharing private details (see 14.6.3 Review Responses).
Log every reminder, call, promise, and payment.

24.3.6 Late fees

Apply late fees only according to your documented terms. If the fee isn’t in the agreement the customer accepted, don’t add it later. Apply it the same way to every customer, and record it on the invoice.

What proof to keep

The signed agreement with payment terms
Copies of every invoice, reminder, and notice with dates
Call notes and any written payment plan
Your written collection steps

Keep these in the customer’s job file and your accounting system.

Common mistakes

No terms in writing. You can’t enforce a due date or fee the customer never agreed to.
Adding a late fee after the fact. It starts a fight you’ll likely lose.
Waiting months before the first reminder. The longer a balance sits, the harder it is to collect.
Threats or public shaming. Posting about a customer’s debt or telling their neighbors can create legal trouble and bad reviews.
Collecting under a different name. The Federal Trade Commission (FTC) explains that a creditor using a name that suggests a third party is collecting can be covered by the Fair Debt Collection Practices Act (FDCPA).
Hiring a collector without checking. A collection agency’s behavior reflects on you.

When to get help from a pro

An attorney should review your payment terms, late fees, and any plan to use liens, courts, or collection agencies. A bookkeeper can help you track receivables. Questions to ask:

Is my late fee or interest rate allowed in my state?
Do lien rights apply to my trade, and what are the deadlines?
Does the FDCPA or a state collection law apply to how I collect?

Bill’s note

[Bill: add a short note. For example, how you handle an overdue SiteSmarty invoice, or a client who turned a collection dispute into a better review by staying calm.]

How I did this for SiteSmarty

[Date I did this:]
[What I actually did, step by step: the SiteSmarty payment terms, reminder schedule, and collection steps]
[What it cost and how long it took:]
[What surprised me or what I’d do differently:]
[Screenshot or photo to add, with private info blurred: the overdue invoice report and reminder settings]
[Result so far:]

Questions people ask

Can I charge a late fee? Only if it’s in the terms the customer agreed to and your state allows it. Ask an attorney about limits.

Do debt collection laws apply to my business? The FDCPA mainly covers third-party collectors. The FTC explains it can also cover a business that collects its own debts under a name suggesting someone else is collecting. Unfair or deceptive collection practices can still be a problem under other laws.

When should I send an invoice to collections? After your written steps are done and you’ve talked with an attorney or bookkeeper about the cost and the options.

Should I use small claims court? It can work for smaller amounts. Limits and procedures vary by state, so check your state or county court website.

Audit check

Question: Are late payments handled through written, consistent steps, with late fees only as the signed terms allow?
Pass looks like: Written terms, an automatic reminder schedule, documented calls and notices, fees applied as agreed, and attorney input before legal steps.
Fail looks like: No written terms, surprise fees, threats, months of silence, or no record of contact.
Evidence to collect: Signed terms, overdue invoice report, reminder copies, call notes, and any payment plans.

Where this fits

Do this first: 11.1.6 Payment Terms, 16.6.4 Failed Payments

Do this next: 16.7 Follow-Up Procedures

Sources

Federal Trade Commission, "Think your company's not covered by the FDCPA? You may want to think again" (checked October 17, 2026)
Google Business Profile Help, "Tips to improve your local ranking on Google" (checked October 17, 2026)
Google Business Profile Help, "Tips to get more reviews" (checked October 17, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.