Salary Arrears Calculation: Process, PF, Tax and Relief

Salary arrears calculation comes up whenever pay is revised with a past effective date: an increment approved in July but effective from April, a DA revision, a wage settlement, or a minimum wage revision that payroll missed. The arithmetic is straightforward. The complications are statutory: PF and ESI on arrears, professional tax, the 50% wage rule, and TDS, including the tax relief available when arrears relate to earlier years. This guide covers the process, a full worked example, statutory treatment and a relief calculation.

When Arrears Arise

Retrospective increments: appraisal cycles finish after the effective date.
DA or VDA revisions: notified after the month they apply from.
Minimum wage revisions: states revise minimum wages (often in April and October), and payroll may apply them late.
Wage settlements: agreements with unions with back-dated effect.
Corrections: an allowance missed for some months.
Promotions: confirmed with retrospective effect.

Step-by-Step Arrears Calculation

Identify the effective date and the months affected.
For each month, compute what should have been paid under the revised structure, using actual paid days for that month.
Subtract what was actually paid, component by component.
Sum the differences: these are arrears per component.
Compute statutory contributions on arrears (PF, ESI, PT, LWF where applicable).
Add arrears to the current month's payroll as separate lines.
Recompute TDS for the year, and consider relief if arrears relate to earlier tax years.

Always compute month by month. If an employee had loss-of-pay days in May, May's arrears should be prorated in the same way.

Worked Example: Increment Processed Three Months Late

Suresh's increment is approved in July with effect from 1 April. His basic rises from ₹30,000 to ₹35,000, and HRA (50% of basic) from ₹15,000 to ₹17,500. Special allowance is unchanged. He had full attendance in April and June, and 3 days of loss of pay in May (31-day month).

Month	Paid days / days	Basic arrears (₹)	HRA arrears (₹)	Total (₹)
April	30 / 30	5,000	2,500	7,500
May	28 / 31	4,516	2,258	6,774
June	30 / 30	5,000	2,500	7,500
Total		14,516	7,258	21,774

May workings: basic arrears ₹5,000 × 28 ÷ 31 = ₹4,516.13, rounded to ₹4,516; HRA arrears ₹2,500 × 28 ÷ 31 = ₹2,258.06, rounded to ₹2,258. Without the loss-of-pay adjustment, total arrears would have been 3 × ₹7,500 = ₹22,500, overpaying by ₹726.

In July, Suresh's payslip shows his revised salary for July plus two arrears lines: basic arrears ₹14,516 and HRA arrears ₹7,258, labelled "April to June".

PF on Arrears

PF applies to arrears of basic and DA (and any wage add-back under the 50% rule).
If the employer contributes on actual wages: employee PF on Suresh's basic arrears is 12% × ₹14,516 = ₹1,741.92, rounded to ₹1,742, with a matching employer share.
If PF is capped at ₹15,000 and Suresh's basic was already above it, there is no PF on arrears.
EPS on arrears applies only if the original wages were below the ₹15,000 ceiling, and only up to the ceiling.
Report arrear PF through an arrear ECR, separate from the regular monthly ECR. Our ECR filing guide explains how.

ESI, PT and LWF on Arrears

ESI

For employees covered by ESI, contributions apply on arrears of wages. How arrears are attributed to contribution periods, and their effect on coverage, should be checked against ESIC's current guidance. An arrear that takes monthly wages above ₹21,000 for past months does not, by itself, end coverage for a period that has already started.

Professional tax

Most states apply PT on salary paid in the month. A large arrear may move the employee into a higher monthly slab for that month; the annual cap of ₹2,500 still applies.

LWF

Usually unaffected, as LWF in most states is a fixed amount per period.

TDS on Arrears

Arrears are taxable in the tax year in which they are received, under both regimes. In the month of payment:

Add arrears to projected annual salary.
Recompute annual tax under the declared regime.
Deduct the difference over the remaining months, or entirely in the month of payment.

For arrears that relate to the current tax year (as in Suresh's case), this is a normal recomputation; see our guide on how to calculate TDS on salary.

Relief When Arrears Relate to Earlier Years

If arrears relate to an earlier tax year, receiving them now may push the employee into a higher slab than they would have faced had the money been paid on time. The law provides relief (formerly section 89(1), claimed with Form 10E; the Income-tax Act, 2025 carries the concept with new references). The employee files the prescribed form on the e-filing portal and may submit the computation to the employer so TDS reflects the relief.

How the relief is computed

Tax on current year income including arrears (A1) and excluding arrears (A2). Difference: A = A1 minus A2.
Tax on the earlier year's income including the arrears (B1) and as originally assessed (B2). Difference: B = B1 minus B2.
Relief = A minus B, if positive.

Worked relief example

Meera receives ₹1,00,000 of arrears in tax year 2026-27 relating to 2025-26. She is on the new regime in both years; we assume the same slabs applied in both years.

Computation	Taxable income (₹)	Tax including cess (₹)
Current year with arrears (A1)	14,00,000	93,600
Current year without arrears (A2)	13,00,000	78,000
Earlier year with arrears (B1)	12,00,000	0 (rebate)
Earlier year as assessed (B2)	11,00,000	0 (rebate)

Workings: A1 = ₹20,000 + ₹40,000 + 15% of ₹2,00,000 (₹30,000) = ₹90,000, plus 4% cess = ₹93,600. A2 = ₹20,000 + ₹40,000 + 15% of ₹1,00,000 (₹15,000) = ₹75,000, plus cess = ₹78,000. B1: ₹12,00,000 is within the rebate limit, so nil. B2: nil.

A = ₹15,600. B = 0. Relief = ₹15,600. Meera's net tax on the arrears is nil, because had they been paid in 2025-26, her income would still have been within the rebate. Without relief, she would pay ₹15,600 on money that would have been tax-free.

Code on Wages Considerations

Revisions that change the proportion of basic to total remuneration can change the 50% test outcome; rerun it for each arrears month.
Minimum wage arrears are a compliance issue in themselves: pay them promptly when revisions are notified.
Wage-linked benefits such as overtime and bonus may also need recomputation for the arrears period.

Common Arrears Mistakes

Computing arrears on the full monthly difference without prorating for loss of pay.
Forgetting PF on arrears where contributions are on actual wages.
Including arrear PF in the regular ECR instead of an arrear ECR.
Showing arrears as a lump sum with no period, making relief claims hard.
Missing knock-on effects on gratuity provisions and bonus.
Letting arrears for exited employees lapse instead of paying them.

Arrears for Employees Who Have Left

A revision effective from April may be approved after some employees have left. They are still entitled to arrears for the months they worked, unless the revision terms validly say otherwise. Process them through an off-cycle payment:

Compute month-wise arrears as for current employees.
Deduct PF where applicable and include it in an arrear ECR.
Recompute TDS on the employee's salary for the year from your records; the employee will report it alongside income from any new employer.
Pay to the bank account on record, after confirming it is still active.
Issue a revised settlement statement and include the amount in the salary certificate.

Ignoring arrears for leavers is a common source of complaints and, in unionised settings, disputes.

Arrears Checklist

Confirm the effective date and approval for each revision.
List affected employees, including leavers.
Compute month-wise arrears using paid days.
Rerun the 50% wage test for affected months.
Compute PF, ESI and PT on arrears.
Show arrears as separate payslip lines with their period.
Recompute TDS; collect relief computations where arrears relate to earlier years.
File the arrear ECR and update gratuity and bonus provisions.

Arrears in Fininvo Payroll

Fininvo Payroll includes arrears processing among its India payroll features, so retrospective changes flow into the payslip, PF and TDS for the month they are paid. See India payroll and compliance.

Frequently Asked Questions

How are salary arrears calculated?

For each affected month, compute the revised salary on actual paid days, subtract what was paid, and add up the differences by component.

Is PF deducted on arrears?

Yes, on arrears of basic and DA where PF is on actual wages, or where the employee's original wages were below the ₹15,000 ceiling. Report it through an arrear ECR.

Are arrears taxed in the year received?

Yes. Relief is available if arrears relate to earlier years and receiving them now increases tax.

Who claims arrears relief?

The employee, by filing the prescribed form. The employer can factor the relief into TDS if the employee provides the computation.

Is this tax advice?

No. This is general information. Slabs differ across years; compute relief with the actual rates for each year and take professional advice where needed.