How to Collect Overdue Payments From Customers
Most overdue invoices aren't from customers who refuse to pay. They're from customers who forgot, lost the email, are waiting on their own client, or hit a rough month. That means the best collection strategy is usually persistent, polite, and well-timed, not aggressive. Here is a plan you can follow starting today.
What should I do the day an invoice goes past due?
Contact the customer within a day or two of the due date. Waiting a few weeks signals that the deadline wasn't serious, and the longer an invoice sits, the harder it gets to collect.
Start with the assumption that something simple went wrong. Your first message should do three things:
- Name the invoice (number, amount, original due date).
- Ask if they received it.
- Include a way to pay right now, such as a card or ACH link.
Here is a message you can copy:
Hi Maria, a quick note that invoice #1042 for $2,400 (due March 15) is showing as unpaid on our end. In case it got buried, here's the link to pay by card or bank transfer: [link]. If anything looks off or you need a different arrangement, just reply and let me know. Thanks!
Notice what's missing: blame, threats, and sarcasm. A friendly tone gets more replies, and you keep the relationship intact.
How often should I follow up on an overdue invoice?
Consistency matters more than any single message. A simple schedule works well for most small businesses:
- Day 1 to 3 past due: Friendly reminder with the pay link.
- Day 7: Second reminder. Ask directly whether there's a problem with the invoice.
- Day 14: Try a different channel. If you emailed twice, send a text or make a phone call.
- Day 21 to 30: A firmer message stating the balance, how long it's been outstanding, and what happens next if it stays unpaid (a pause on future work, for example, if your terms allow it).
- Day 45: Call, and put a clear deadline on the table.
- Day 60: Move to formal collection steps (covered below).
Change the channel as well as the wording. Some people never open email but answer a text within minutes. Others ignore texts but pick up the phone. If one channel gets silence, switch.
What should a firmer follow-up say?
By day 21 or 30, be direct but still professional:
Hi Maria, invoice #1042 for $2,400 is now 30 days past due. I'd like to get this resolved this week. Can you confirm when I can expect payment? If cash is tight right now, I'm happy to set up a payment plan, but I need to hear from you by Friday to arrange it.
The last sentence matters. A deadline plus an easy way out (a payment plan) gives the customer a reason to respond.
Should I offer a payment plan or accept partial payments?
Usually, yes. Money in installments beats waiting indefinitely for a lump sum that may never come. A customer who can't pay $2,400 today may be able to pay $800 a month for three months.
If you offer a plan, protect yourself:
- Put it in writing, even if it's just an email both of you reply to.
- State the amounts and exact dates.
- Say what happens if a payment is missed (the full balance becomes due again, for instance).
- Make payments automatic or at least easy, with a link for each installment.
Accepting a partial payment is also fine, and it often breaks the stalemate. Customers who pay something tend to finish paying. Just confirm in writing that the partial payment applies to the open balance and the remainder is still owed.
What if the customer disputes the invoice or goes silent?
These are two different situations.
If they dispute it
Take it seriously and respond quickly. Ask what specifically is wrong: the amount, the scope of work, a missing item. Review your contract, estimate, and any messages that show what was agreed. If part of the dispute is valid, fix it, issue a corrected invoice, and collect on that. A resolved dispute is a paid invoice. An ignored dispute becomes a bad debt.
If they go silent
Silence is common, and it doesn't always mean refusal. Keep your outreach consistent, vary the channel, and try the person who signs off on payments rather than your day-to-day contact. A short, specific message often works better than a long one:
Hi Maria, I haven't been able to reach you about invoice #1042 ($2,400, now 45 days past due). Please call or reply by Friday so we can settle this or set up a plan. Otherwise I'll need to move the account to the next step.
Only say that if you're prepared to follow through.
Can I charge late fees on overdue invoices?
Only if you set that up in advance. A late fee should be stated in your contract, estimate, or invoice terms before the work is done, with a clear rate or amount. Many states limit how much interest or what kind of fees you can charge, and rules vary by state and by industry, so check your state's requirements. If you never mentioned late fees upfront, adding one afterward invites a dispute. This is general information, not legal advice.
A practical alternative: offer a small early-payment discount instead of penalizing late payment. It costs about the same and feels better to customers.
When should I escalate to formal collections?
A common point to escalate is around 60 days past due, after you've made repeated, documented attempts through multiple channels. At that stage, your options include:
- A formal demand letter: A written notice stating the amount owed, the deadline, and your intent to pursue further action. It's often enough to prompt payment.
- A collections agency or service: They contact the customer on your behalf, usually for a percentage of what they recover.
- Small claims court: For smaller balances, this is a low-cost route you can pursue yourself. Dollar limits and procedures differ by state.
- An attorney: Worth considering for larger balances or when a contract dispute is involved.
Two legal points to keep in mind. First, the federal Fair Debt Collection Practices Act (FDCPA) restricts how third-party debt collectors can contact people, covering things like harassment, false statements, and calling at unreasonable hours. If you hire an outside collector, make sure they follow it. Second, texting customers falls under TCPA consent rules, so only text people who have given you permission to be contacted that way, and honor any request to stop. State laws add further requirements. None of this is legal advice, so consult an attorney for your situation.
How can I stop invoices from going overdue in the first place?
Prevention beats collection. A few habits cut down late payments:
- Send invoices immediately after the work is done, not days later.
- Include a pay link so customers can pay in under a minute.
- State your terms (net 15, net 30) and any late fee clearly upfront.
- Send a reminder a few days before the due date.
- Collect a deposit or progress payments on larger jobs.
- Ask for a payment method on file before starting work with new customers.
How Casey handles this for you
Chasing payments is the part most owners put off because it's awkward and time-consuming. Casey is an AI accounts receivable assistant that does the follow-up for you. You text it like an employee ("Bill Studio Nova $2,400 for the March shoot"), and it sends the invoice with a pay link, reminds the customer three days before it's due, and, if it goes past due, follows up automatically on the channel and at the time each customer responds to, offering payment plans and partial payments along the way. At 60+ days, one tap sends the invoice to Casey's collections team for calls, formal demand letters, and settlements with your approval.
Sending invoices and pre-due reminders are free, and invoices paid on time cost nothing. Casey charges $5 per invoice only if it has to chase it, and collections is 20% of what's recovered, nothing if nothing is. See the details on the pricing section.
Frequently asked questions
How long should I wait before sending an overdue invoice to collections?
Many businesses wait until about 60 days past due, after several documented follow-ups across email, text, and phone. If the customer is unresponsive earlier or has disputed nothing but simply vanished, you may reasonably escalate sooner.
Is it legal to text a customer about an overdue invoice?
It can be, but the Telephone Consumer Protection Act (TCPA) requires appropriate consent for many texts, and you must honor opt-out requests. State rules may add more limits. This is general information, not legal advice, so confirm your approach with an attorney.
What should I say in a payment reminder?
Include the invoice number, amount, and original due date, ask if they received it, and give a direct pay link. Keep the tone friendly and neutral at first, then become firmer and set a clear deadline if the invoice stays unpaid.
Can I stop work for a customer who hasn't paid?
If your contract or terms say you can pause work for unpaid invoices, you generally can. If your agreement is silent, pausing could create a dispute, so review the contract and consider talking to an attorney first.
Does a demand letter actually work?
Often it does, because it shows you're serious and documents the debt, which matters if you later go to small claims court or hire a collector. It isn't guaranteed, but it's a low-cost step before more formal action.
What if the customer can't afford to pay the full amount?
Offer a written payment plan or accept a partial payment with the remainder still owed. Spelling out amounts, dates, and what happens if a payment is missed keeps everyone clear and improves your odds of getting paid.