Central government employees get arrears for the delay in rolling out a pay commission. For the 8th Pay Commission, they can expect arrears starting from January 1, 2026. But the big question is, will these arrears apply to their basic pay, dearness allowance (DA), house rent allowance (HRA), transport allowance (TPTA) and other perks? Or will the arrears cover only a few components of the salary?Looking at how previous pay commissions have worked, it seems that central government employees typically receive arrears solely on their basic pay, excluding fixed or policy-driven allowances unless there is a specific announcement.This implies that they may not get arrears for DA, HRA, TPTA or other allowances.If that’s the case, a delay in the implementation of the 8th Pay Commission could really hit their wallets hard. But how much could Level 3-6 employees potentially lose if the pay commission is implemented in May 2027, August 2027 or December 2027?Also Read: 8th Pay Commission calculator: Why central govt pensioners seek 15-year commuted pension rule changeBefore diving into that, let’s first grasp how key arrears work for central government employees.Dearness allowance (DA)Dearness allowance is based on the basic salary of an employee and is revised twice a year. The DA revision doesn’t stop even when the tenure of a pay commission ends. For example, the 7th Pay Commission’s tenure ended on December 31, 2025, but the DA was revised in January 2026 and is expected to be revised soon. The government will keep on revising it till the 8th Pay Commission is implemented. Since it gets revised in tune with the consumer price index every six months, central government employees don’t get arrears DA.House rent allowance (HRA)HRA is also based on the employees’ basic salaries. The current HRA rates are 10% (Z-category cities), 20% (Y-category cities) and 30% (X-category cities) of the basic pay. The rates were 8%, 16% and 24%, respectively, for these cities, but they increased after DA reached 50% in January 2024. HRA rates are determined in every pay commission as a percentage of the basic salary of an employee, but the employees don’t get arrears for this.Transport allowance (TPTA)This is also a fixed allowance that is revised in every pay commission. Employees get it on the basis of their ranks and the city of posting. In the 7th Pay Commission, TPTA ranges from Rs 900 to Rs 7,200 plus the prevailing DA rate. E.g., if the TPTA is Rs 1,800 and the DA rate is 58%, the employee will get Rs 2,844 (Rs 1,800+58% of Rs 1,800) as the TPTA.The 8th Pay Commission is most likely to revise the current TPTA rates. But even after the raise, employees may not get arrears on it.These three components, DA, HRA and TPTA, are given to almost all central government employees.8th Pay Commission implementation dateThe 8th Pay Commission was given a deadline of 18 months (approximately May 2027) to submit its recommendations when its terms of reference were notified in November 2025. After the report submission, the government may take another three to six months to review and implement the report.If the pay commission submits its report earlier than the 18-month deadline, the government may implement the report early.How a delay impacts arrears of Level 3-6 employees Once the government approves the 8th Pay Commission fitment factor, employees’ basic salaries will get a boost through multiplication. This will also lead to an automatic increase in HRA, and TPTA rates will also be revised.In this article, we will estimate how much money Level 3-6 employees may lose out on if the 8th Pay Commission is implemented in May 2027, August 2027 or December 2027. Under these scenarios, they lose arrears for 17 months, 20 months and 24 months, respectively. Our assumptions for calculations are as follows-Basic pay- As per 7th Pay CommissionHRA rate- 24% of basic pay (for X cities)TPTA= Fixed rate (As per 7th CPC)+DA, assuming that DA will reach 62% at the beginning of 2027 and 64% in the second half of 2027.8th Pay Commission fitment factor= 2.1 (estimated)HRA, TPTA @ 2.1 fitment factor= 2.1x current ratesEstimated arrear losses for Level 3 employees in 8th Pay Commission Fitment factor 2.1x Basic salary ₹ 21,700 ₹ 45,570 HRA (At 24% of basic) ₹ 5,208 ₹ 10,937 TPTA (At 62% DA) ₹ 5,832 ₹ 12,247 HRA+TPTA ₹ 11,040 ₹ 23,184 Loss if 8th CPC is implemented in May 2027 ₹ 1,87,680 Loss if 8th CPC is implemented in August 2027 ₹ 2,20,800 Loss if 8th CPC is implemented in December 2027 ₹ 2,66,688 Estimated arrear losses for Level 4 employees in 8th Pay Commission Fitment factor 2.1x Basic salary ₹ 25,500 ₹ 53,550 HRA (At 24% of basic) ₹ 6,120 ₹ 12,852 TPTA (At 62% DA) ₹ 5,832 ₹ 12,247 HRA+TPTA ₹ 11,952 ₹ 25,099 Loss if 8th CPC is implemented in May 2027 ₹ 2,03,184 Loss if 8th CPC is implemented in August 2027 ₹ 2,39,040 Loss if 8th CPC is implemented in December 2027 ₹ 2,88,576 Estimated arrear losses for Level 5 employees in 8th Pay Commission Fitment factor 2.1x Basic salary ₹ 29,200 ₹ 61,320 HRA (At 24% of basic) ₹ 7,008 ₹ 14,717 TPTA (At 62% DA) ₹ 5,832 ₹ 12,247 HRA+TPTA ₹ 12,840 ₹ 26,964 Loss if 8th CPC is implemented in May 2027 ₹ 2,18,280 Loss if 8th CPC is implemented in August 2027 ₹ 2,56,800 Loss if 8th CPC is implemented in December 2027 ₹ 3,09,888 Estimated arrear losses for Level 6 employees in 8th Pay Commission Fitment factor 2.1x Basic salary ₹ 35,400 ₹ 74,340 HRA (At 24% of basic) ₹ 8,496 ₹ 17,842 TPTA (At 62% DA) ₹ 5,832 ₹ 12,247 HRA+TPTA ₹ 14,328 ₹ 30,089 Loss if 8th CPC is implemented in May 2027 ₹ 2,43,576 Loss if 8th CPC is implemented in August 2027 ₹ 2,86,560 Loss if 8th CPC is implemented in December 2027 ₹ 3,45,600 However, these are just estimates as the real calculations will be known only after the 8th Pay Commission decides on the fitment factor and declares new rates of HRA and TPTA.