How to stop clients paying late (and what to do when they do)

Plenty of US freelancers wait far longer than their terms say to get paid on a Net-30 invoice. The fix isn’t harder chasing — it’s three small structural moves before the invoice even goes out.

Move 1: Put late fees in the contract and on the invoice

You can’t charge a late fee you never agreed to. Add a clause to your contract — e.g. “Invoices unpaid past the due date accrue a 1.5% monthly late fee” — and repeat it on the invoice itself. Confirm your state’s maximum allowable rate; some states cap how much interest a business can charge.

The fee’s real value is behavioral. Once finance teams see a documented late fee and a stop-work clause, they tend to move your invoice up the queue ahead of vendors who have neither.

Move 2: Use Net 15 by default, not Net 30

Net 30 is a corporate default that quietly became everyone’s default. There’s no rule that you must grant 30 days. Switching your standard terms to Net 15 can cut your average payment cycle by a couple of weeks. Clients who push back hard on shorter terms are often flagging their own cashflow problems — useful information.

Move 3: Bill a deposit up-front for new clients

The single biggest predictor of late payment is “new client, first project.” A 50% deposit accomplishes three things at once:

• You stop financing the client’s cashflow problem.
• The clients who refuse a deposit are usually the ones who’d have paid late anyway.
• You de-risk the engagement before you’ve sunk hours into it.

What to actually do when an invoice goes overdue

Day 1 past due: a polite reminder

One sentence email. “Hi [name], invoice #X dated [date] looks a few days overdue. Could you confirm the payment status? Happy to resend if needed.”

Most late invoices are genuinelystuck in someone’s approval flow. This unblocks them.

Day 7 past due: a formal reminder with the late fee shown

Restate the amount due, the original due date, and the late fee accruing under your contract — as an actual dollar figure in USD. Seeing the number grow nudges most clients to pay rather than let it climb.

Day 21 past due: escalate inside their company

CC the project owner’s manager or the accounts-payable lead. Project owners dislike finance escalations more than late-pay reputational hits, so this often shakes the payment loose.

Day 45+ past due: formal collection options

For amounts within your state’s small-claims limit, small-claims court is cheap, doesn’t require a lawyer, and the threat of a filing alone often gets you paid. For larger amounts, a demand letter from an attorney or a reputable collections agency is the next step. Keep every signed contract, invoice, and email — documentation is what makes any of these work.

Automate the chasing, not the deciding

The dignity-preserving move is to automate the reminders (so you never have to write the awkward email) and personally handle the escalations. Infacam sends reminders automatically at Day 1, 7, and 21, with text you’ve pre-approved. Start free and the next late-paying client gets nudged without you touching anything.