You’ve chased an overdue invoice for months. You’ve sent reminders, tried settlement offers, maybe even considered a lawyer. At some point, you have to make a decision: keep chasing or accept the loss and move on.
Writing off a bad debt is a straightforward business decision with real tax implications. The timing, documentation, and method matter. Get them right, and you get a tax deduction. Get them wrong, and you lose both the money and the deduction.
What “writing off” actually means
Writing off a bad debt doesn’t mean the debtor is off the hook forever. It means you are no longer pursuing active recovery and you are recognizing the expense on your tax return.
For tax purposes, the IRS has strict rules about what qualifies as a deductible bad debt. Generally, you can deduct a business bad debt if:
- You provided goods or services on credit (most invoices qualify)
- You previously included the income in your tax return (you recorded the sale, not just claimed cash received)
- The debt became partially or wholly worthless (you exhausted reasonable collection efforts)
- You can identify the debtor and the amount owed
If you are a cash-basis business (you report income only when paid in cash), you typically cannot claim a bad-debt deduction. You already did not include that income on your return when it was invoiced. The IRS logic is that you have no loss to deduct. If you are accrual-basis (you report income when invoiced, regardless of payment), you can deduct the uncollected amount.
The timeline: when does an invoice become uncollectible?
There is no hard rule that says “after 180 days it’s officially a bad debt.” The IRS standard is that you must have “reasonable grounds” to believe the debt is not going to be paid.
In practice, here is what that looks like for most small businesses:
30 to 60 days overdue: Active pursuit is happening. Send reminders, offer settlement. Recovery odds are still above 70% per industry research. Do not write off yet.
60 to 120 days overdue: The debtor is ignoring you or is in a genuine cash crunch. Send a formal notice, offer a payment plan, or attempt one final escalation. You are still at 40% to 50% recovery probability. Document your attempts for the IRS.
120 to 180 days overdue: You have a clear paper trail showing the debt exists, the debtor was contacted multiple times, and payment has not been received. If the debtor has gone silent, is unreachable, or has explicitly told you they cannot pay, you now have reasonable grounds to believe the debt is uncollectible. Write it off at this point if you want to.
Over 180 days overdue: Any debt this old is almost certainly uncollectible. Write it off. Keep your documentation.
Note: If you have filed suit, you are still actively pursuing the debt. Do not write it off while a case is pending.
How the statute of limitations affects your timeline
The statute of limitations (SOL) is the legal window during which a creditor can sue to collect a debt. It varies by state, from 3 years to 10+ years. This affects your decision to write off.
If your state’s SOL is 3 years, and the invoice is now 2.5 years old, you have 6 months left to pursue legal action. You might choose to hold the write-off until the SOL expires, so you do not give up the legal right to collect.
If your state’s SOL is 6 years, and the invoice is 2 years old, you have 4 more years. You could write it off now for tax purposes, but understand that you are still legally able to collect (and if you do, you may owe back taxes on the deduction if the recovery happens after the write-off year).
For most small businesses, the SOL is 3 to 6 years. You do not have to wait for it to expire to write off the debt; the write-off is a tax accounting step, not a legal one.
How to document the write-off for the IRS
The IRS expects evidence that you actually pursued collection. What does that look like?
- Copies of the original invoice and payment terms
- Email correspondence with the debtor requesting payment
- Copies of formal demand letters or final notice letters you sent
- Notes on any phone conversations (date, outcome, next step)
- Evidence of legal action (court filings, settlement offers) or a decision to abandon pursuit
- If applicable, a note explaining why you believe the debt is uncollectible (debtor has closed business, is unreachable, has no known assets, explicitly cannot pay)
You do not need to produce a formal “write-off letter” for each invoice. A simple record showing that you tried, when you tried, and a date when you decided to stop pursuing is enough.
If you are audited and the IRS questions the deduction, you will need to show this work. Without documentation, the IRS can disallow the deduction.
The mechanics: how to record the write-off
If you use accounting software (QuickBooks, Xero, FreshBooks):
Create a journal entry crediting Accounts Receivable and debiting Bad Debt Expense. The entry looks like:
Debit: Bad Debt Expense $2,500 Credit: Accounts Receivable $2,500
This removes the invoice from your AR balance sheet and records the expense for tax purposes.
If you file on paper:
On Schedule C (self-employed / sole proprietor) or Form 1065 (partnership), deduct the bad debt on the “Other Expenses” line or under “Bad Debts” if your software offers that line item.
Accrual-basis businesses only should use IRS Form 8949 or maintain a separate schedule of bad-debt deductions, depending on your filing complexity.
Cash-basis businesses typically do not file this separately, because they already did not recognize the income.
What happens if the debtor pays after you write off the debt
This is rare but worth knowing. If a debtor pays months or years after you have written off the invoice, the recovery is taxable income in the year you receive payment.
Example: you write off a $2,500 invoice in 2025, claiming the bad-debt deduction. In 2026, the debtor pays the $2,500. You must report the $2,500 as income in 2026.
The net effect: the deduction in 2025 and the income in 2026 offset, so you do not end up ahead or behind. But both years are affected.
The practical decision: when to stop chasing
From a business perspective, the question is not about taxes. It is about ROI on your collection effort.
If you have spent 10 hours chasing a $800 invoice, your time is worth more than the recovery. Let it go.
If you have spent 2 hours on a $5,000 invoice, it is worth spending a few more hours.
If the debtor is a repeat client and you are worried about the relationship, a write-off signals that the relationship has ended. Sometimes that is the right call. Sometimes it means a contract renegotiation instead.
For invoices over 6 months old with no progress, most businesses find that a formal Final Demand Notice (a final legal-grade push) is worth the effort. After that, write it off.
The bad-debt threshold
Most accountants recommend writing off an invoice once it exceeds 120 to 180 days past due, you have documented good-faith collection attempts, and you are confident the debtor cannot or will not pay. At that point, the tax deduction usually exceeds the value of continued pursuit.
ti3 handles the first part of this timeline: consistent, documented contact during the recovery window. The ti3 5-week sequence and optional Final Demand Notice create the paper trail you need to justify a write-off to the IRS when the time comes. After that, case resolution lets you close the file and move forward.
FAQ
Q: Can I write off a debt that the debtor disputes?
A: Not easily. If the debtor disputes the invoice (claims they did not receive it, already paid, or the work was not completed), you still have an active disagreement. The IRS sees this as an unresolved matter, not an uncollectible one. Wait until the dispute is settled before writing off.
Q: What if the debtor is a corporation that filed bankruptcy?
A: File a proof of claim in the bankruptcy proceeding. If the corporation is liquidating, you may recover a small percentage. After the bankruptcy is closed, you can write off the uncovered portion. Bankruptcy discharge does not automatically let you write off the debt; you have to show you exhausted the bankruptcy claim process.
Q: Is there a dollar limit on bad-debt deductions?
A: No. You can deduct any amount that meets the IRS criteria (accrual-basis accounting, documented pursuit, reasonable grounds for uncollectibility). There is no cap on the deduction itself. However, if your bad debts are unusually high as a percentage of your revenue, the IRS may scrutinize the deduction more closely during an audit.
Q: Do I have to use the same write-off date for all invoices?
A: No. Each invoice can have its own write-off date when it meets the uncollectibility threshold. Some invoices may be written off in 2025, others in 2026. Date each one when you decide to stop pursuing it.
Q: What about invoices I have never chased?
A: If you invoiced a customer and never bothered to send a single reminder, the IRS will not honor a bad-debt deduction. You have to show you tried. Send at least one formal communication (email, letter) before writing it off. The IRS expects reasonable collection effort.