Key Takeaways
- A write-off is an accounting entry. It cleans up your books, but it doesn’t change what your client owes you.
- The real cost is bigger than the balance. At a 10% net margin, replacing the lost profit takes 10 times the write-off in new sales.
- You don’t have to choose. Place the account with an agency first, write off whatever doesn’t come back, and book any later recovery as income.
- A business bad debt is generally deductible only if you already counted the money as income, so cash-basis businesses usually can’t deduct an unpaid invoice.
- A contingency agency charges nothing if it recovers nothing, so placing an account before you write it off costs you nothing upfront.
- If the same kinds of accounts keep going bad, the fix is in your credit and billing process, not in more collecting.
It’s the end of the quarter, and there’s an account in your aging report that everyone’s tired of looking at. Nobody’s called the client in weeks. Someone suggests writing it off, and honestly, it would be nice to stop seeing it.
We get it. A write-off is the tidy option. It makes an uncomfortable number disappear from the report, which is exactly why so many businesses reach for it before they should, and why good accounts receivable management starts with a clear rule for when an account is really gone.
Here’s what many owners don’t realize: writing off and collecting aren’t an either-or decision. You can do both, in the right order, and end up with clean books and some of your money back. Let’s walk through what a write-off does, what it really costs, what the tax rules say, and when it’s time to make the call.
What a Write-Off Actually Does (and Doesn’t Do)
There are two accounting methods for bad debt, and the one you use determines when the loss is recorded as an expense.
As AccountingTools explains, the direct write-off method charges an invoice to bad debt expense once it’s clear it won’t be paid. The allowance method estimates future bad debt when sales are made, records it in a reserve, and writes off specific invoices against that reserve later.
The reserve goes by a few names: allowance for doubtful accounts, allowance for uncollectible accounts, or bad debt reserve. Smaller businesses often use the direct method. The allowance method matches the expense to the sale that created it, which is why accountants generally prefer it. Your accountant can tell you which one fits your books.
Either way, a write-off is an entry in your ledger. It doesn’t change what your client owes. The invoice is still due, the contract is still enforceable, and a collection agency or a court can still pursue the balance.
A write-off isn’t forgiveness, unless you’ve sent the client a written release saying so.
When Should You Write Off Bad Debt?
The right time to write off a debt is when you no longer have a reasonable expectation of being paid. The IRS uses nearly the same standard in Topic No. 453: a debt is worthless when the facts and circumstances show there’s no reasonable expectation it will be repaid.
In practice, many businesses write off at a fixed age, often 120 or 180 days, or when a client files for bankruptcy, dissolves, or can’t be found.
Fixed ages work well for estimating a reserve. They’re less useful for deciding to give up on a specific account, because age alone doesn’t tell you whether your client is out of money, unhappy about something, or simply ignoring you. Those situations call for different responses, and some of those accounts are still collectible.
The Real Cost Is Bigger Than the Balance
A $10,000 write-off looks like a $10,000 loss on your income statement. In practice, it costs more.
To earn that money back, you have to sell enough new work to generate $10,000 in profit, and profit is only a slice of revenue.
Here’s the math: divide the write-off by your net profit margin, and that’s the revenue you need just to make up the loss.
| Write-off | At a 5% margin | At a 10% margin | At a 20% margin |
| $2,500 | $50,000 in new sales | $25,000 in new sales | $12,500 in new sales |
| $5,000 | $100,000 in new sales | $50,000 in new sales | $25,000 in new sales |
| $10,000 | $200,000 in new sales | $100,000 in new sales | $50,000 in new sales |
Plain arithmetic: the write-off divided by your net margin. Use your own margin from your income statement.
Look at the 5% column. If you run on thin margins, a single $10,000 write-off means finding $200,000 in new sales.
There’s a cash cost on top of that. You already paid the wages, materials, and overhead behind that invoice, and a write-off means that cash isn’t coming back. Our guide to cash flow statements shows where that gap appears.
Unpaid balances also have costs beyond the invoice itself. Our post on the cost of unpaid invoices covers how late payments affect the rest of the business.
The Tax Question Many Owners Get Backwards
Plenty of owners frame this as “collections or the tax write-off,” as if choosing one cancels the other. The tax rules don’t work that way, and clearing this up removes a false choice.
Under the same IRS guidance, a business can deduct a bad debt only if the amount owed was included in its gross income in the current or a prior year.
That’s the catch for cash-basis businesses, which record income when the money is actually received. If an invoice for services was never paid, it was never income, so there’s generally nothing to deduct. Accrual-basis businesses, which booked the sale when they sent the invoice, can deduct the loss when the debt becomes worthless, and business debts can be deducted in part as well as in full.
Two more rules from IRS Publication 334 complete the picture. Businesses generally use the specific charge-off method, which means deducting the specific account that went bad. And if you later recover a debt you already deducted, that recovery generally goes back into income.
Put together, sending an account to collections doesn’t cost you the deduction. If an agency recovers money on an account you already deducted, you report it as income, which is a better outcome than absorbing the full loss. Your accountant should confirm the timing for your books, and none of this is tax advice.
What Collections Can Recover on Accounts You’d Written Off
The case for trying first comes down to odds and cost.
Recovery odds fall as an account ages. Once an invoice passes 90 days past due, the chance of collecting it drops by more than half. But lower odds aren’t zero odds, and an aged account deserves a professional look before it’s written off.
The cost of trying is what makes the decision easier. A collection agency working on contingency keeps a percentage of what it recovers and charges nothing if it recovers nothing. Our breakdown of what a commercial collection agency charges explains how contingency fees work.
Anything an agency recovers on an account you’d already written off is money you’d counted as gone.
At Summit A•R, our recovery rates run nearly double the industry average, and we’ve recovered more than $250 million for clients since 1996.
If you’re hesitant about using a collection agency because you’d like to keep the client, that’s a fair concern. It’s why we work every account under our Preserve Human Dignity (P.H.D.) Philosophy: no robocalls, no threats, no pressure tactics. An aged account is worth pursuing, but not at the cost of your reputation.
You Can Do Both, in the Right Order
To recover what you can and still keep your books accurate, follow these four steps.
- Finish your internal process first. Send reminders, make a phone call, offer a payment plan, and send a demand letter, documenting each step. A complete record of those attempts lets an agency pick up where you left off and move faster.
- Place the account while the odds are still reasonable. That’s usually somewhere between 60 and 120 days past due.
- Write off what the agency reports as uncollectible. When an agency closes an account without recovery, you have the kind of documentation your accountant will want for a worthless debt. Record the write-off then.
- Book any late recovery as income. Some accounts pay months after a write-off because the client’s situation changed. That’s money you wouldn’t have seen if the account had simply been erased.
A Simple Framework for Deciding
Not every account deserves the same treatment. This table keeps the decision consistent across your team.
| Situation | What to do | Why |
| Client is still operating and ignoring you | Place it with an agency now. | They may be able to pay and have chosen not to. An agency gives them a reason to reconsider, at no upfront cost to you. |
| Client disputes the invoice | Resolve it or document your position, then place it if it stays unpaid. | Documented, undisputed debts are much easier to collect than contested ones. |
| Client filed for bankruptcy | File a claim in the bankruptcy case, and write off what the claim won’t cover. | Collection activity has to stop once a bankruptcy is filed, so the claim becomes your route to recovery. |
| Client dissolved or can’t be found | Place it with an agency that offers skip tracing. Write it off if they can’t be located. | Skip tracing can find businesses and owners who’ve moved without notice. |
| Balance under a few hundred dollars | Send one final notice, then write it off. | The recovery may not justify the time. |
| Large balance, strong paperwork, no response | Place it, and be ready for legal action if the agency recommends it. | Large, well-documented debts are often the ones worth taking to court. |
If a client has moved or can’t be located, our skip tracing department is run by a licensed private investigator.
If an account needs legal action, our full-service litigation team handles it, with every cost approved by you in writing first.
When the Write-Offs Keep Coming
One write-off is a cost of doing business. A pattern of them usually points to a process problem, and more collection effort won’t fix that on its own.
The usual causes are familiar:
- Credit goes out without checks. Accounts are opened without a credit check or a credit limit.
- Invoices are unclear. Bills go out late, incomplete, or to the wrong person.
- There’s no follow-up schedule. Reminders depend on someone remembering to send them.
- Nobody owns the aging report. No one is responsible for tracking what’s overdue.
Problems that start with slow follow-up tend to build over the year, as our post on ignoring unpaid invoices in January explains.
Our accounts receivable consulting service reviews how your business grants credit, invoices, follows up, and escalates, then helps fix the gaps.
Our accounts receivable calculators are a good place to start. Knowing your turnover and days sales outstanding shows how much money is sitting in your receivables right now.
Before You Write It Off, Let Us Take a Look
If you’ve got accounts marked for write-off at year-end, send them our way first. We work commercial accounts nationwide on contingency, with no minimums and no fee unless we recover your money, and we’ll tell you plainly which ones are worth pursuing and which aren’t.
Did you find this article helpful? Just imagine how helpful our experts could be for your bottom line! Learn more about our full suite of services, or contact us today to discuss how we can help recover your lost revenue.
Frequently Asked Questions About Bad Debt Write-Offs
When should a business write off bad debt?
Write off an account when there’s no reasonable expectation of collecting it, which is the standard the IRS uses for a worthless debt. That point usually comes after your internal follow-up has failed and a collection agency has worked the account and reported it uncollectible, or when the client has dissolved, or its bankruptcy case has left nothing for you. Writing off at a fixed age, like 120 days, without a real collection attempt can mean giving up money that was still recoverable.
Can you send an invoice to collections after writing it off?
Yes. A write-off removes the receivable from your books, but it doesn’t change your client’s obligation to pay. The contract stays enforceable, and an agency can still pursue the balance. If the agency recovers money on a debt you already deducted, that recovery generally counts as income for tax purposes. The cleaner sequence is to place the account first and write off only what doesn’t come back.
Is a bad debt write-off tax deductible?
For a business, yes, but generally only if the amount was already included in your gross income in the current or a prior year. Accrual-basis businesses that booked the sale when they invoiced it can deduct a worthless debt, in full or in part, using the specific charge-off method. Cash-basis businesses that never recorded the unpaid invoice as income generally have nothing to deduct. Confirm the timing and method with your accountant, because the rules depend on how your books are kept.
What’s the difference between a bad debt write-off and a bad debt reserve?
A bad debt reserve, also called an allowance for doubtful accounts, is an estimate of future uncollectible receivables that you record when sales are made, so the expense lines up with the revenue in the same period. A write-off is the later entry that removes one specific uncollectible invoice from receivables, charged against the reserve if you keep one or straight to expense if you don’t. The reserve is an estimate made in advance. The write-off is the confirmed loss on a single account.
How much revenue does it take to replace a $10,000 write-off?
Divide the write-off by your net profit margin. At a 10% margin, a $10,000 bad debt takes $100,000 in new sales to earn the lost profit back. At a 5% margin, it takes $200,000. That’s why a write-off costs far more than its face value, and why it’s worth placing an aged account with a contingency agency, which charges nothing if it recovers nothing, before the entry goes in.