The audit disclosure does not decide deductibility
For FY 2025–26 and AY 2026–27, apply the Income-tax Act, 1961. In a tax audit of accounts maintained on the mercantile basis, Form 3CD clause 27(b) asks for particulars of prior-period income or expenditure credited or debited to the profit and loss account. Notified ITR-6 Part A-OI item 15 asks for the net amount of prior-period income or expenditure credited or debited to that statement. Keep a gross reconciliation before reporting the net; neither the label nor the net figure establishes the tax-year adjustment.
Read the applicable text: Income Tax Department, 1961 Act including section 145 CBDT Form 3CD, clause 27(b) CBDT Notification 49/2026, ITR-6 Part A-OI Income Tax Department, AY 2026–27 transition.
Determine when the right or obligation arose
For mercantile accounting under section 145, read the contract, completion and acceptance evidence, dispute history and applicable tax rules. A late invoice can document an existing liability or a liability first established this year; those are different situations. Similarly, a late customer receipt does not by itself fix when business income accrued. Test any applicable ICDS and special timing provisions separately, including section 43B where applicable.
Trace book presentation and prior tax treatment
Record whether the current item is a P&L debit or credit or an adjustment to comparative figures or opening equity. Do not populate a current P&L disclosure using an equity-only amount merely to make it tie to a tax adjustment. Check the previous return and any operative order for earlier deduction or taxation. Keep the audit and filing working at the individual-item level even when the return has a net disclosure.
Make the computation adjustment once
If current book expense repeats an amount already allowed, remove the duplicate deduction. If current book income repeats an amount already taxed, reconcile the exclusion on its facts. If an amount belongs to an earlier year and was omitted then, examine the legally available correction route rather than moving it into the current year by convenience. Review the applicable Schedule BP treatment based on the legal basis and the figures already included; Part A-OI item 15 does not itself direct an add-back. In the notified Schedule BP, use a specific adjustment line if applicable before considering a general line such as item 24 for an otherwise unlisted addition or item 32 for an otherwise unlisted allowable deduction. Check the legal basis and the utility’s treatment before finalising.
Use a sign-off bridge
For each item record the gross amount, book location, original and current evidence, applicable legal year, prior tax treatment, audit classification and one computation effect. Reconcile the gross items to clause 27(b) where in scope, the net P&L disclosure to Part A-OI, and the signed adjustment total to the return computation. Keep separate workings for disputes, reversals and statutory timing exceptions.
Six worked illustrations
All facts and amounts are fictional. Calculations illustrate the stated assumptions, not a predetermined legal outcome.
Illustrative example 1: A net disclosure hides two tax decisions
Assume ₹90,000 prior-period expenses and ₹60,000 prior-period income are both in current P&L and both were already recognised in the correct earlier tax years. The P&L shows a ₹30,000 net debit; the current computation adds ₹90,000 and removes ₹60,000, yielding a net increase of ₹30,000 on those facts.
Illustrative example 2: Later invoice proves an earlier liability
A ₹1.20 lakh expense is booked when the invoice arrives. Earlier acceptance and contract evidence establish accrual in the prior year; ₹1 lakh had been allowed earlier and ₹20,000 relates to that same earlier year but was omitted. On the assumptions, the full ₹1.20 lakh is outside the current deduction; review the ₹20,000 correction route separately.
Illustrative example 3: A liability first crystallises this year
A ₹2.40 lakh disputed claim is settled at ₹1.50 lakh in FY 2025–26, with no enforceable obligation established before settlement on the assumed facts. The ₹90,000 difference is not an expense; test the ₹1.50 lakh under current-year deduction provisions without a blanket prior-period add-back.
Illustrative example 4: Avoid taxing income twice
An ₹80,000 receipt credited to current P&L was fully taxed in the preceding year. The reconciliation removes ₹80,000 from the current business computation on those facts; the cash receipt remains recorded in the books.
Illustrative example 5: Distinguish equity from current P&L
A ₹1.10 lakh comparative correction does not enter current P&L. A separate ₹35,000 prior-period item does. On these assumptions, only ₹35,000 enters the relevant current P&L disclosure population; both items may require independent tax-history review.
Illustrative example 6: Split a mixed journal
A ₹2 lakh debit contains ₹1.30 lakh attributable to the current year and ₹70,000 belonging to and allowed in an earlier year. Assuming no other restriction, retain ₹1.30 lakh and add back ₹70,000 once.
Ten-step verification table
| Step | Action | Evidence |
|---|---|---|
| 1 | Extract late postings and adjustments | Journal and account reports |
| 2 | Separate debit, credit and equity entries | Book presentation and accounting memo |
| 3 | Identify the legal accrual event | Contract, acceptance and dispute documents |
| 4 | Check statutory timing rules | Section and ICDS analysis |
| 5 | Match earlier tax treatment | Filed computations and assessment evidence |
| 6 | Reconcile gross prior-period audit details | Clause 27(b) working |
| 7 | Compute the net in current P&L | Part A-OI item 15 tie-out |
| 8 | Determine each tax adjustment once | Current computation and Schedule BP mapping |
| 9 | Assess earlier-year correction options | Status, deadlines and records |
| 10 | Document unresolved items before filing | Reviewed exception register |
Sixteen practitioner FAQs
1. Does a prior-period audit disclosure automatically disallow the amount?
No. Analyse the applicable tax year and provision.
2. Does a late invoice prove earlier accrual?
No. Verify when the underlying right or liability arose.
3. What is Form 3CD clause 27(b) concerned with?
Prior-period income or expenditure credited or debited to P&L.
4. Where does the notified ITR-6 ask for the net amount?
Part A-OI item 15 for AY 2026–27.
5. Should gross expenses and income be retained in the working?
Yes. A net figure can conceal opposite treatments.
6. Does item 15 create an automatic add-back?
No. Use the actual tax computation and verified schedule mapping.
7. Can an equity-only correction be treated as a current P&L entry?
No. Review its separate accounting and tax consequences.
8. Should actual payment always determine the tax year?
For accounts on the mercantile basis, apply the accrual analysis subject to specific timing provisions. Section 145 also recognises a regularly employed cash system, subject to the applicable rules.
9. What if an earlier allowance is under dispute?
Track the operative tax position and preserve alternative workings.
10. Can a current-year settlement produce a current expense?
It may where the liability first arises then and the deduction conditions are met.
11. Is the entire original claim deductible when it settles for less?
Determine the liability actually established and any related tax treatment.
12. How do I handle receipts already taxed?
Trace the earlier inclusion and avoid taxing the same amount twice.
13. Can a missed earlier deduction be taken whenever discovered?
Do not assume that. Check the proper period and available correction routes.
14. Is the 2025 Act numbering used for this AY?
The article covers FY 2025–26 under the 1961 Act.
15. What if the tax adjustment differs from the disclosure?
Explain each difference in a bridge; they serve different purposes.
16. What is the best review evidence?
An item-level trail from journal and accrual evidence through prior return and current computation.
Official sources
Income Tax Department, 1961 Act including section 145 CBDT Form 3CD, clause 27(b) CBDT Notification 49/2026, ITR-6 Part A-OI Income Tax Department, AY 2026–27 transition Income Tax Department: Items reportable in the tax audit report