8th Pay Commission: If Basic Salary Is ₹18,000, How Much Arrear Will Be? — Explained
Arrears = (New Basic Pay – Old Basic Pay) × Number of Delay MonthsExample:
If revised basic pay becomes ₹36,000 and old basic was ₹18,000 for 20 months:
➡ (₹36,000 – ₹18,000) × 20 = ₹3,60,000 arrears📊 Estimated Arrears for an ₹18,000 Basic (Common Fitment Scenarios)Since the government hasn’t finalized the fitment factor, analysts use a range of multipliers (from around 2.0 up to 2.57) to estimate revised basic pay and arrears. Here’s how it may look for a Level 1 employee with current basic ₹18,000:Fitment FactorRevised BasicMonthly IncreaseArrears (20 Months)2.0×₹36,000₹18,000₹3.60 Lakh2.15×₹38,700₹20,700₹4.14 Lakh2.28×₹41,040₹23,040₹4.61 Lakh2.57×₹46,260₹28,260₹5.65 Lakh(This table assumes a 20‑month delay between January 2026 and implementation — a typical projection used by financial calculators.)👉 So, if your basic pay is ₹18,000, total arrears could range from roughly ₹3.6 lakh to ₹5.65 lakh over 20 months, depending on the fitment factor finally approved.📍 Why Fitment Factor MattersThe fitment factor determines how much basic pay increases under the new pay commission. The earlier 7th Pay Commission used a factor of 2.57. For the 8th Pay Commission, analysts estimate a factor between about 2.0 and 2.57 (possibly higher in some demands), affecting both monthly salary and arrears data-size.📅 Expected Arrears Period
- Effective date: January 1, 2026 (when revised pay is considered to start).
- Implementation: Actual payments may follow months or years later, depending on final notification and budget timing.
- Arrears months: The number of months determines how many months of revised difference you get in arrears (e.g., 18–24 months).
✅ Difference in basic pay
❌ house Rent Allowance (HRA) and Transport Allowance (usually revised only from the date of implementation)
❌ Dearness Allowance on the arrears amount (often excluded if DA resets on implementation)🧾 Important Notes
- Final figures will depend on the officially notified fitment factor and implementation timeline — the above numbers are estimates used by analysts and calculators.
- Pensioners may also get arrears on revised pension amounts, depending on final policy.
- Income tax on arrears can be managed using Section 89 relief to reduce tax burden on the lump sum.