What to Do When an Invoice Is 60 Days Overdue (and Still Unpaid)

Sixty days is not an arbitrary milestone — it is the point at which invoice recovery becomes genuinely difficult and the cost of further delay becomes measurable.

Collection rates drop sharply at 60 days. According to the Atradius Payment Practices Barometer (2024), invoices that remain unpaid at 60 days have approximately a 50% lower collection rate than those resolved at 30 days. The longer a debt ages, the more likely the debtor has depleted their available cash, prioritised other creditors, or decided that your lack of formal escalation signals they can continue to delay.

Legal timing matters. In England and Wales, the Late Payment of Commercial Debts Act 1998 entitles you to statutory interest at 8% above the Bank of England base rate from the first day the invoice becomes overdue — not from 60 days. That means by the time you reach 60 days, you have potentially 30–60 days of accrued statutory interest you can legitimately add to the demand. Calculate it, include it, and state the legal basis in your letter.

Small claims is available from day one, but most people act at 60–90 days. In the US, you can file a small claims case the day after a payment is due — there is no legal waiting period. In practice, most creditors send 2–4 reminders before filing, which typically brings them to the 60-day mark. If you've already sent a formal demand letter and given a 14-day deadline, you do not need to wait further. At 60 days with no response to a formal demand, you have grounds to file immediately.

Credit and relationship signals. For ongoing client relationships, 60 days is also the point at which most professional service providers formally stop active work under non-payment clauses. Communicating this clearly — “I have paused work on all active projects pending resolution of outstanding invoices” — creates practical leverage that a reminder email does not. A client who needs your work delivered cannot ignore a work suspension the way they can ignore an email. Use this leverage, but use it in writing so it is on the record.

At 30 days overdue, late payment is common but often fixable with a firm follow-up. At 60 days with no payment after multiple reminders, you're dealing with either a client who has serious cash flow problems, one who is intentionally avoiding payment, or one who has simply disappeared.

The data supports acting fast: invoice recovery rates drop sharply after 90 days. GoCardless research found 1 in 6 invoices go unpaid after 90 days — meaning a 60-day overdue invoice is approaching the highest-risk window for non-recovery. FreshBooks reports freelancers spend an average of 1.5 days per month chasing late payments — which makes having a systematic escalation plan (rather than ad-hoc follow-ups) essential for protecting your time and your cash flow. By 60 days, you still have a reasonable chance of collecting — but you need to change your approach. Polite emails aren't the right tool anymore.

Before escalating, confirm: Have you sent at least 3–4 reminders? Have you tried a phone call? Has the client responded at all, even to dispute the invoice? If yes to the first two and no to the third, proceed with the escalation ladder below. If the client is disputing, address the dispute directly — see how to handle late payments for dispute scenarios.

A final notice is different from a regular follow-up. It's short, direct, and states consequences clearly. No apologies, no softening language.

Send this email and also stop any ongoing work immediately. Reference your contract's right to pause services for non-payment. Use InvoiceGrid's reminder email generator to produce a final-notice email with the right tone and structure.

If the final notice email gets no response within 5–7 days, send a formal written demand letter. The key difference from an email: it goes via certified mail (proof of delivery), carries more legal weight, and signals you're serious.

What to include

• Invoice number, amount owed, original due date, and days overdue
• Summary of your follow-up attempts and dates
• Any applicable late fees accrued (use the late fee calculator if your contract includes a clause)
• A firm payment deadline (7–14 days from the letter date)
• Your stated intent: "If payment is not received by [date], I will file a claim in small claims court / engage a debt collection agency."

Send via email and certified mail. Many clients pay after receiving a physical demand letter — it makes the situation undeniably real.

Small claims court is designed for disputes like this — no lawyer required, relatively low filing fees, and a binding judgment if you win. In the US, limits vary by state: typically $5,000–$10,000 (some states go up to $25,000).

What to bring

• Signed contract or agreement (email confirmation counts if no formal contract)
• The original invoice and any revised invoices with late fees
• Proof of work delivery (project files, emails, client approvals)
• All follow-up documentation — dates, emails, phone call logs
• Your formal demand letter with certified mail receipt

Filing fees are typically $30–$100. If you win, the judgment can be enforced through wage garnishment or bank levies. Win rates are high when documentation is thorough — this is why logging every follow-up matters from day one.

A collections agency is an alternative to court — particularly useful for larger amounts, international clients, or when you simply don't want to deal with court proceedings. They'll pursue the debt in exchange for a cut: typically 25–50% of what's recovered.

Look for agencies that specialize in B2B (business-to-business) debt, as freelance and small business invoices fall into this category. Avoid agencies that require upfront fees. Contingency-based collection (they only get paid if they collect) is the standard model.

Hand over your full documentation: contract, invoices, follow-up log, demand letter, and certified mail receipt. The stronger your paper trail, the better your recovery odds.

Sometimes the pragmatic decision is to stop chasing. Consider writing off the debt when:

• The amount is small (under $200–300) and legal or collection costs exceed what you'd recover
• The client has disappeared with no traceable contact or address for court filing
• You've sent a demand letter and filed a small claims case — and still can't enforce the judgment

Document the write-off formally: mark the invoice as bad debt in your records and consult your accountant about a bad debt deduction (available in many jurisdictions for accrual-basis accounting). Block the client for future work.

For a full decision framework on when to write off vs. keep chasing, see what to do when a client won't pay. For preventing this from happening again, see how to invoice clients as a freelancer — deposits, clear terms, and prompt invoicing reduce bad debt significantly.

At the 60-day mark, you need three communications ready: a firm email, a formal letter for post or PDF attachment, and a phone call script. Use all three in combination — each channel reinforces the others and demonstrates you are pursuing recovery through every reasonable avenue.

Template A: 60-Day Firm Email

Short, specific, and unambiguous. No pleasantries beyond the opening. References previous attempts. States the exact deadline and exact consequence.

Subject: Invoice #[NUMBER] — 60 Days Overdue — Final Notice Before Legal Action

[Name],

Invoice #[NUMBER] for [£/$ AMOUNT] is now 60 days overdue. The
original due date was [DATE]. I have contacted you on [DATES] without
receiving payment or a substantive response.

This is formal notice. I require payment of [£/$ AMOUNT] in full by
[DATE — 7 days from today].

If payment is not received by that date, I will [file a claim in
small claims court / refer this debt to a collections agency] without
further notice.

Payment details:
  [Bank / payment link]
  Reference: INV-[NUMBER]

If you have a genuine dispute with this invoice, you must contact
me in writing before [same date] with full details.

[Your name]
[Your business name]
[Your contact number]

Template B: 60-Day Formal Letter (Post or PDF)

Send this simultaneously with the email — by tracked/recorded post for larger amounts, or as a formal PDF attachment for smaller ones. The physical letter format changes how the recipient processes the seriousness of the situation.

[Your Business Name]
[Your Address]
[City, Postcode / Zip]
[Email] | [Phone]

[Date]

[Client Business Name]
[Client Address]
[City, Postcode / Zip]

SENT BY: RECORDED POST AND EMAIL

RE: SECOND NOTICE — INVOICE #[NUMBER] — [£/$ AMOUNT] — 60 DAYS OVERDUE

Dear [Client Name / Accounts Department],

Invoice #[NUMBER] for [£/$ AMOUNT], issued on [Invoice Date] in
respect of [brief description], has now been outstanding for 60 days.
The payment due date was [Due Date].

I have previously contacted you on [Date(s)] and have not received
payment or a response.

The outstanding balance, including any accrued statutory interest,
is as follows:

  Principal (Invoice #[NUMBER]):        [£/$ AMOUNT]
  Statutory interest accrued ([X] days): [£/$ AMOUNT]  (if applicable)
  TOTAL NOW DUE:                         [£/$ TOTAL]

I require payment of the full amount by [Date — 7 days from today].

If payment is not received by [Date], I will proceed with formal
debt recovery action — including a claim in the county court or
small claims court — without further notice. Any court fees and
reasonable costs of recovery may be added to the amount claimed.

Payment details:
  Bank: [Bank Name]
  Account Name: [Your Name]
  Account Number: [XXXXXXXX]
  Sort Code / Routing: [XX-XX-XX]
  Reference: INV-[NUMBER]

Yours sincerely,

[Your Full Name]
[Your Title / Business Name]

Template C: 60-Day Phone Call Script

Call the same day you send the letter and email. A call is not a replacement for written notice — it is a supplement. Your goal is to confirm receipt, create a moment of personal accountability, and get either a payment commitment or a specific explanation of the delay.

OPENING:
"Hi [Name], this is [Your Name] from [Your Business]. I'm calling
regarding Invoice #[NUMBER] for [£/$ AMOUNT] — I've just sent you
a formal notice by email and post. Do you have a moment?"

IF YES:
"The invoice is now 60 days overdue. I've followed up on [dates]
and haven't received payment. I need this resolved by [Date —
7 days]. Can you confirm that you've received my invoices and
tell me what's happening on your end?"

IF THEY SAY "WE'RE PROCESSING IT":
"I appreciate that. Can you give me a specific payment date and
the name of the person processing it? I need a confirmed date,
not an estimate."

IF THEY SAY "THERE'S A PROBLEM WITH THE INVOICE":
"What specifically is the problem? I need that in writing today.
A dispute doesn't affect the undisputed portion — which I still
require payment of by [Date]."

IF NO ANSWER — LEAVE THIS VOICEMAIL:
"Hi [Name], this is [Your Name] from [Your Business]. I'm calling
about Invoice #[NUMBER] for [£/$ AMOUNT], which is now 60 days
overdue. I've sent a formal notice by email and post today.
Please call me back at [number] by [Date] or make payment using
the details in my email. If I don't hear from you, I'll be
proceeding with formal recovery. Thank you."

AFTER THE CALL:
Send a brief follow-up email: "As discussed / As per my voicemail
today — I require payment of [£/$ AMOUNT] by [Date]. I've sent a
formal letter by post and email. Please confirm receipt."

Log every call — date, time, who you spoke to, what was said. Call notes are admissible evidence if the matter goes to court.

Use this checklist when an invoice hits the 60-day mark. Work through it in order — missing a step can weaken your legal position or delay recovery unnecessarily.

1. Verify all previous correspondence is logged. Pull up every email, letter, and call note related to this invoice. Confirm dates, confirm delivery (for any tracked post), and confirm whether the client has responded at any point. If you cannot evidence your chase history, document what you can recall now.
2. Calculate any accrued late fees or statutory interest. If your contract includes a late fee clause, calculate the amount owed from the trigger date. In the UK, also calculate statutory interest under the Late Payment of Commercial Debts Act. Use InvoiceGrid's overdue interest calculator to get the exact figure.
3. Draft your formal 60-day demand. Use Template B above or the demand letter template. Include the principal amount, any accrued interest, and a total outstanding figure. Set a deadline of 7–14 days from today.
4. Send by email AND tracked post simultaneously. For amounts over £500 / $500, always send a physical letter. Keep the tracking reference number. Record the send date and method in your invoice tracking system.
5. Make the follow-up phone call. Same day. Use the script above. Log the call outcome immediately.
6. Set a hard deadline in your calendar. Mark the day the 7 or 14-day payment deadline expires. At that point, you either have payment or you file / refer. Do not extend the deadline without a written payment commitment from the client.
7. Prepare your small claims paperwork in advance. If you are in the US, locate your local small claims court and download the filing form. In England and Wales, open Money Claim Online and have your documentation ready. Filing the moment the deadline passes — not a week later — maintains pressure and credibility.
8. Suspend all active work for this client. If you are still delivering work, stop now and notify the client in writing. Every hour of additional work increases your exposure.

Not every unpaid invoice is worth pursuing. The decision framework below helps you weigh the amount owed against the realistic cost and probability of recovery. The key variables are: the amount, the quality of your evidence, the client's traceability, and the jurisdiction limits available to you.

Factors that make fighting worthwhile:

• You have a signed contract or a clear email agreement specifying the work and the fee
• You have documented proof that the work was delivered and accepted (client sign-offs, project files, approvals)
• The client is a traceable business with a registered address
• The client has not disputed the invoice — they are simply not paying
• The amount exceeds the cost of the relevant court process

Factors that favour writing off:

• The amount is small and filing fees plus your time would exceed what you'd recover
• The client is a sole trader with no identifiable assets and no fixed address
• You have no written contract and limited evidence of the work or agreement
• The client has filed for bankruptcy or insolvency proceedings have begun
• You have already won a court judgment but cannot enforce it

One additional factor that many freelancers and small businesses underweight: the signal your response sends to future clients. A reputation for systematically pursuing non-payment — documented in your client onboarding documentation — reduces late payment rates over time. The cost of pursuing one bad debt may be justified by the preventative effect on future clients who know you follow through.

Whatever you decide, document the outcome formally in InvoiceGrid or your accounting system: mark the invoice as “bad debt — written off” or “referred to court — [date]” so your records are accurate for accounting and tax purposes.