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Finance operations

When Should You Write Off an Uncollectible Customer Invoice?

How to document an unpaid customer invoice, approve a write-off, record partial recoveries and keep the party history, with separate income tax and GST checks.

7 min read

Short answer

To write off an uncollectible customer invoice in books, first reconcile the balance, document why recovery is no longer reasonably expected, and obtain approval under your business's authority rules. Then reduce the customer receivable through a bad-debt expense or an existing loss allowance, as appropriate to your accounting policy, while retaining the invoice and collection history. Treat an invoice dispute, income-tax deduction and GST adjustment as separate decisions. Last reviewed: October 2026.

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When should an overdue invoice become a write-off?

Start with recoverability, rather than age alone. A late customer who acknowledges the balance and follows a credible payment plan needs a different decision from a party whose business has closed and from whom no recovery is expected.

Ask your CA which accounting framework and loss-recognition policy your books follow; do not adopt another business's ageing cut-off as an accounting rule.

Use the receivables collection routine guide to organise follow-ups before the monthly review. Recommend a write-off only after the reviewer can explain the balance, the recovery evidence and the amount proposed.

What evidence should support the decision?

Prepare one review pack for each proposed write-off. The checklist below is a recommended control, not a universal statutory document list.

  • Invoice details, agreed payment terms and evidence that the goods or services were supplied.
  • A reconciled party ledger showing receipts, advances, credit notes and the exact unpaid balance.
  • Collection notes recording contact attempts, replies, broken commitments and any proposed payment plan.
  • The reason recovery is unlikely, supported by available correspondence or other reliable records.
  • Any dispute, settlement proposal, guarantee, security or recovery action that could change the expected receipt.
  • The amount proposed for write-off, the amount still expected, and the reason for any split.

Check unmatched bank receipts before proposing a loss. Follow the bank reconciliation monthly routine guide so that money already received does not remain hidden behind an overdue invoice.

Who should approve the write-off?

Set a written authority rule. Have accounts prepare the reconciliation, the person responsible for collections explain the recovery position, and the authorised owner or finance approver accept or reject the proposal. Where practical, keep preparation and approval with different people.

The approval should identify the invoice, amount, reason, supporting records, proposed entry and whether collection will continue. Ask the CA to review accounting or tax questions separately. An internal signature does not establish tax eligibility.

How should you handle a disputed invoice?

Find out whether the customer cannot pay or challenges what was billed. Investigate missing deliveries, rejected work, wrong prices and unrecorded returns before choosing an entry.

Recommended review path before changing the customer balance
SituationCheck firstNext decision
Customer disputes the price or supplyContract, delivery records and correspondenceResolve the billing issue and assess any correction or credit note.
Customer accepts the debt but cannot payRecovery evidence and payment proposalsAssess an allowance or write-off under the applicable accounting policy.
Customer offers a reduced settlementWritten terms and authority to accept themApprove the settlement separately and assess its accounting and tax treatment.
Part of the balance remains recoverableEvidence supporting each portionReview the unrecoverable portion without automatically clearing the whole invoice.

Keep unresolved items visible in the review pack. Do not label a billing correction as bad debt merely to clear an old balance.

How do you record the write-off in the books?

Under a simple direct write-off approach, the entry debits bad-debt expense and credits the customer receivable. Where a loss allowance already covers the amount, the write-off generally uses that allowance against the receivable instead of charging the same loss again. Confirm the entry and any allowance shortfall with your CA.

  1. Post and allocate all receipts and valid adjustments first.
  2. Confirm the approved amount and whether an allowance already exists.
  3. Record the entry against the specific customer and invoice, with the approval reference.
  4. Check that the party ledger, receivables control account and outstanding report agree.
  5. Retain the original transaction and supporting records alongside the adjustment.

These are simplified entry patterns, not instructions to reverse sales or GST. Have the accountant confirm the treatment for the framework your business follows.

What happens with partial payments and later recoveries?

Illustrative example: an invoice has an outstanding balance of Rs 50,000. A receipt of Rs 20,000 is allocated to it, leaving Rs 30,000. The review supports recovery of another Rs 10,000 and no recovery of the remaining Rs 20,000. If approved under the applicable policy, write off Rs 20,000 and keep Rs 10,000 outstanding. Do not write off the full remaining balance.

If money arrives after a write-off, link the receipt to the original invoice and write-off record. Ask the accountant to use the appropriate recovery or reversal entry; do not create a fresh sales invoice for collecting the old debt. Review any related tax treatment separately.

Keep the customer's original invoice, receipts, adjustments, approval and later recovery together. Maintain a separate written-off balance schedule if the accounting software removes these items from normal collection reports.

Does a book write-off qualify for a tax deduction?

A bookkeeping write-off does not automatically qualify for an income-tax deduction. Income-tax law sets its own conditions for bad-debt deductions. Have your CA assess the applicable law and tax computation separately.

Keep a tax-review note alongside the accounting approval. Record whether the deduction was claimed, deferred or disallowed, with the CA's explanation. This helps a later recovery receive the right review without assuming that the original book expense was deducted for tax.

What common mistakes should the monthly review catch?

  • Clearing every old invoice automatically, without reviewing recovery evidence.
  • Writing off a balance before allocating receipts or investigating a dispute.
  • Charging another expense when an existing allowance already covers the loss.
  • Treating accounting approval as permission to waive payment or claim tax relief.
  • Deleting the invoice or party history after clearing the outstanding balance.

Add the approved write-off schedule and unresolved decisions to your monthly finance review. The finance operations guides hub brings together the collection, bank reconciliation and other routines that support this check.

Sources and review

Published by ThynkBored. Published 25 October 2026. Content review completed 25 October 2026. The byline identifies accountability for the page; it does not represent an individual author, credential, professional certification, or evidence of CA, CS, accounting, or legal review.

  1. Sectoral FAQs

    Central Board of Indirect Taxes and Customs, Government of India. Accessed 26 October 2026.

    Supports: GST already paid cannot be adjusted merely because a customer debt becomes irrecoverable; adjustment is by credit note under section 34 of the CGST Act, subject to prescribed conditions.

This guide recommends a monthly finance control and gives simplified accounting entry patterns. It is not accounting, tax or legal advice. The worked figures are illustrative. Accounting treatment depends on the framework and policy applicable to the business; income-tax deductions, GST adjustments and recovery rights need separate review. No statutory threshold, rate or deadline is stated. Confirm current requirements with your CA and the relevant official portal. Review this guidance quarterly. Last reviewed: October 2026.

Make overdue-balance decisions easier to review

Describe how your business follows up unpaid invoices, reconciles party balances and approves write-offs. ThynkBored can help organise a collection record and monthly review checklist.

Share business type, approximate invoice volumes and the current approval process only. Do not send customer names, invoices, party ledgers, bank statements, legal notices, passwords, OTPs or files through the form. Agree a secure handoff first if records need review.

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Questions owners ask

How old must an invoice be before I write it off?

Do not choose solely by age. Review the reconciled balance, collection evidence and expected recovery under your accounting policy. Ask your CA whether an allowance or write-off is appropriate.

Can I write off only part of a customer invoice?

A partial write-off may be appropriate where the applicable accounting policy and evidence support it. Allocate receipts first, identify the unrecoverable portion and approve that amount separately from what remains collectible.

Should I delete the invoice after writing it off?

Keep the invoice and record the write-off as a linked adjustment. Preserve receipts, correspondence, approval and any later recovery so the customer history remains understandable.

Does a write-off automatically reduce income tax or GST?

No. Ask your CA to assess income-tax deduction conditions separately. CBIC guidance does not permit adjustment of GST already paid merely because a customer debt becomes irrecoverable.