01
Enter the correct pay base first
The arrear belongs to the basic pay or basic pension figure that the DA or DR percentage legally runs on. Gross salary is not the right analytical base.
DA Arrear Calculator
Last updated on May 17, 2026 • Editorial policy
A DA or DR arrear is the unpaid difference between two notified percentage rates applied to the same underlying pay base for the months that were already due but not yet paid at the revised rate. The disciplined way to read the line is to start with the basic pay or pension base, measure the rate gap, and then test how many months that gap remained outstanding before the wider settlement is reviewed.
The rate gap is the economic driverThe arrear starts from the percentage-point difference between the old and revised DA or DR rate, not from headline gross salary.
The pay base controls the rupee lineThe same revision can create a modest arrear at one pay cell and a much larger one at another because the formula runs on the underlying basic pay or pension base.
Pensioners follow the same structureWhen the real question is Dearness Relief arrears, the same arithmetic applies after the basic pension amount replaces salary basic pay.
This is the core arrear line, not the whole settlementThe credited figure can still move once increments, leave status, retirement timing, deductions, or other arrear-linked lines are reviewed.
Calculate DA arrears
Isolate the arrear line first before mixing it with broader payroll or pension-settlement adjustments.
Need the current DA amount instead of arrears?
Use the DA Calculator when the question is the live DA line on current salary or pension. Stay on the calculator when the revised order took effect earlier and the unpaid period itself needs to be measured.
The calculator isolates the core DA or DR arrear line first. It does not attempt to mimic every later allowance, deduction, or tax movement that may appear when the final arrear settlement is posted.
How to read the arrear result
02
Match the earlier and revised rates to the same notification path
The rate gap only has meaning when both percentages come from the same revision chain. Mixing unrelated rates can make the arrear look precise while still being wrong.
03
Measure the payable period carefully
Use unpaid months when the period is already known. Use the date range when the effective date and the payment date are clearer than the month count itself.
04
Treat the output as the core arrear line
The result is the clean DA or DR difference first. The final credited amount can still move once pay changes, deductions, tax, or other allowance-linked arrear lines are added.
How the arrear estimate is worked out
The arrear estimate is a simple liability bridge: old rate, revised rate, one pay base, and the period for which the revised rate remained unpaid.
Monthly DA at earlier rate = Monthly basic pay × earlier DA rate
Monthly DA at revised rate = Monthly basic pay × revised DA rate
Monthly arrear difference = Monthly DA at revised rate - Monthly DA at earlier rate
Core DA arrears = Monthly arrear difference × unpaid months
The calculator rounds the DA or DR line to the nearest rupee for practical payroll-style checking. The result is the core arrear line before any split-period review, settlement additions, or return-level tax analysis.
Recent DA revision path used here
For central-government 7th CPC use, most current arrear checks now sit on the recent 55% to 58% to 60% revision chain. Using the wrong pair is one of the easiest ways to produce a neat-looking but wrong arrear line.
| Effective date | Rate | Typical arrear use |
|---|---|---|
| January 1, 2025 | 55% | Earlier base for the July 2025 revision chain. |
| July 1, 2025 | 58% | Earlier rate for the January 2026 arrear check. |
| January 1, 2026 | 60% | Current revised rate for many live central-government arrear checks. |
Worked arrear cases
These cases show how the same notified revision can create very different arrear lines once the pay base and the unpaid period move.
| Case | Inputs doing the work | Monthly difference | Core arrears | What changed |
|---|---|---|---|---|
| Level 7 style basic pay, 58% to 60%, 3 unpaid months | Basic pay ₹44,900, earlier DA 58%, revised DA 60%, 3 months. | ₹898 | ₹2,694 | A narrow 2-point revision still creates a visible arrear once the unpaid period covers a full quarter. |
| Level 8 style basic pay, 58% to 60%, 3 unpaid months | Basic pay ₹47,600, earlier DA 58%, revised DA 60%, 3 months. | ₹952 | ₹2,856 | The same revision is worth more because the formula is being applied to a higher pay base, not because the percentage changed. |
| Higher basic pay, longer unpaid period | Basic pay ₹67,700, earlier DA 58%, revised DA 60%, 5 months. | ₹1,354 | ₹6,770 | Once the order is delayed for longer, period length can drive the arrear almost as much as the pay base itself. |
Month-wise arrear build-up
This month-wise schedule is useful when the credited line needs a quick audit and the user wants to see the cumulative build-up rather than only the final total.
| Month | Monthly arrear line | Running total |
|---|
Where this arrear check applies
The DA or DR difference is often only one component of the final settlement posted in salary or pension records.
| Question | Covered here? | Why that boundary matters |
|---|---|---|
| Core DA or DR arrear line from a notified revision | Yes | This is the analytical purpose of the page. |
| Transport allowance, deduction, and tax effects on full arrears | Not fully | The wider settlement can still need a payslip- or pension-slip-level review. |
| Increment, promotion, or other basic-pay change during the arrear period | No | The calculator holds one pay base across the period. A mid-period change usually requires a split-period calculation. |
| Leave without pay, joining mid-period, or retirement during the arrear period | No | The payable period can change if all months are not due on the same basis. |
| State-government DA arrears or non-7th-CPC routes | No | Different DA frameworks can have different rate histories, effective dates, and payment treatment. |
| Current DA amount without an arrear question | Partly | Use the main DA Calculator when the live allowance line is the real question. |
Why the final credited arrear can differ
A flat pay-base estimate is the correct starting point, but the credited figure can still diverge once the service record and the settlement workflow become more complex.
| What changed? | Why the credited arrear can move |
|---|---|
| Increment month falls inside the arrear period | The basic pay can be lower in the earlier months and higher in the later months, so a single flat multiplication can misstate the final line. |
| Promotion or pay fixation happens mid-period | The arrear may need to be split across the old and new pay base instead of applying one figure to the full period. |
| Leave without pay, joining date, or retirement date affects payable months | The full inclusive span may not be payable on the same basis if service status changed during the arrear period. |
| The final statement includes other allowance or deduction lines | The credited settlement can move once transport allowance, NPS, tax, or other arrear-linked lines are posted alongside the DA or DR difference. |
How DA arrears usually fit into tax reporting
The arrear is still salary income in the year of receipt, but the full tax analysis usually needs a separate income-tax review.
| Tax point | Why users care |
|---|---|
| DA arrears are taxable | The credited arrear usually becomes part of salary income in the year it is received. |
| Section 89 relief can still matter | If arrears bunch into one year and distort the slab outcome, the return-level relief question becomes important even though it sits outside this core arrear page. |
| Form 10E belongs to the wider return process | The calculator helps isolate the arrear number first. The filing step still belongs to the later income-tax workflow. |
Arrear rules and official sources
The calculator is built for central-government 7th CPC DA or DR arrear checking, not for every arrear regime or every payroll edge case in India.
- The calculation follows the straight DA or DR arrear structure built on monthly basic pay or pension, the old and revised rates, and the period still unpaid at the revised rate.
- If arrear dates are entered, the page uses the inclusive month span between those two dates instead of the manual month field. It does not attempt day-by-day proration.
- The DA or DR line is rounded to the nearest rupee for practical payroll-style checking.
- The optional pay-level field is only a starter. The exact arrear still belongs to the actual pay-matrix figure shown in the live salary or pension record.
- The effective date on the government order matters. The arrear period is the gap between that effective date and the month when the revised rate is actually paid.
- The page isolates the core DA or DR difference first. A full arrear settlement can still require separate review of increments, leave treatment, deductions, and tax.
Related India tools
Open the next tool when the question moves from the arrear line into the live allowance figure or the full salary structure.
DA Calculator
Move here when the key question is the live DA amount rather than the unpaid difference from an earlier revision.
Open calculatorPay Matrix Table
Move here when the arrear review still depends on confirming the exact pay-matrix cell behind the basic-pay figure.
Read table7th CPC Salary Calculator
Move here when the next question is the wider salary structure after DA, including HRA, transport allowance, NPS, and tax.
Open calculatorFAQ
What does this DA arrear calculator show?
It shows the earlier DA or DR amount, the revised amount, the monthly arrear difference, and the total core arrears line for the unpaid months entered here.
Does the calculator calculate full salary arrears?
No. It isolates the DA arrear line first. Wider arrears on transport allowance, deductions, or tax can still need a fuller payslip review.
Why does basic pay matter more than the DA percentage headline?
Because the same revision percentage creates very different arrear amounts at different pay cells. The rupee result is driven by the underlying basic pay.
Can I start from pay level if I do not know the exact basic pay?
Yes. The optional pay-level field can load the entry basic pay for that level as a starting point. Replace it with the real pay-matrix figure if the live cell is higher.
Can pensioners use the calculator for Dearness Relief arrears?
Yes. Pensioners can use the same calculation structure by entering the basic pension amount and reading the arrear line as Dearness Relief rather than salary DA.
Can I use dates instead of counting the months manually?
Yes. If both arrear dates are entered, the calculator uses the inclusive month span between those dates and applies that period to the monthly arrear line.
Are DA arrears taxable?
Yes, DA arrears normally remain part of salary income in the year of receipt. The tax treatment still belongs to the wider salary and return position, not just this core arrear line.
Why can the final credited arrear differ from this result?
The credited arrear can differ when basic pay changes during the arrear period, for example because of an increment, promotion, leave without pay, retirement, or a broader arrear settlement that includes other allowance and deduction lines.
Does the calculator cover every state-government or non-7th-CPC arrear route?
No. The calculator is centered on the central-government 7th CPC DA route. Other DA or DR frameworks can follow different revision timing and payment treatment.