Why does net pay fall during the year?
Gross pay stays the same, yet the amount reaching the employee falls in the second half of the year. The cause is not a missing raise: income tax is calculated on a cumulative base.
In Türkiye, income tax on wages is not calculated on each month's earnings separately, but on the base accumulated since the start of the year. As that cumulative base grows, it crosses into a higher bracket and more tax is withheld from the same gross wage. Employees experience this as a pay cut; in fact gross pay is unchanged and only the tax rate has risen.
How the calculation works
The monthly income tax base is found by deducting the employee's social security and unemployment insurance contributions from gross pay. In 2026 these are 14% and 1% respectively, 15% in total. The remainder is added to the running total each month; tax is computed on the accumulated figure and the tax already calculated in earlier months is deducted to arrive at the current month's withholding.
| Cumulative base | Rate |
|---|---|
| Up to TRY 190,000 | 15% |
| TRY 190,000 – 400,000 | 20% |
| TRY 400,000 – 1,500,000 | 27% |
| TRY 1,500,000 – 5,300,000 | 35% |
| Above TRY 5,300,000 | 40% |
A minimum wage exemption applies on top of this: income tax and stamp duty calculated on the portion of pay corresponding to the minimum wage are exempt and not withheld. Because the exemption is also computed cumulatively, it shifts during the year, which softens the decline without removing it.
A worked example: TRY 60,000 gross per month
The table below follows an employee on TRY 60,000 gross per month through twelve months using 2026 parameters. Social security and unemployment contributions total TRY 9,000, leaving a monthly tax base of TRY 51,000. Stamp duty is fixed at TRY 204.70, being 0.759% of the amount above the minimum wage.
| Month | Cumulative base | Tax computed | Exemption | Tax withheld | Net pay |
|---|---|---|---|---|---|
| January | 51,000.00 | 7,650.00 | 4,211.33 | 3,438.68 | 47,356.62 |
| February | 102,000.00 | 7,650.00 | 4,211.33 | 3,438.68 | 47,356.62 |
| March | 153,000.00 | 7,650.00 | 4,211.33 | 3,438.67 | 47,356.62 |
| April | 204,000.00 | 8,350.00 | 4,211.32 | 4,138.68 | 46,656.62 |
| May | 255,000.00 | 10,200.00 | 4,211.33 | 5,988.67 | 44,806.62 |
| June | 306,000.00 | 10,200.00 | 4,211.33 | 5,988.67 | 44,806.62 |
| July | 357,000.00 | 10,200.00 | 4,537.75 | 5,662.25 | 45,133.05 |
| August | 408,000.00 | 10,760.00 | 5,615.10 | 5,144.90 | 45,650.40 |
| September | 459,000.00 | 13,770.00 | 5,615.10 | 8,154.90 | 42,640.40 |
| October | 510,000.00 | 13,770.00 | 5,615.10 | 8,154.90 | 42,640.40 |
| November | 561,000.00 | 13,770.00 | 5,615.10 | 8,154.90 | 42,640.40 |
| December | 612,000.00 | 13,770.00 | 5,615.10 | 8,154.90 | 42,640.40 |
Net pay falls from TRY 47,356.62 in January to TRY 42,640.40 in December — a difference of TRY 4,716.22, roughly 10%. The drops occur where the cumulative base crosses TRY 190,000 in April and TRY 400,000 in September. The partial recovery in July and August comes from the minimum wage exemption itself moving into a higher bracket.
What the employer can do
- Giving employees a twelve-month net projection at the start of the year removes most of the complaints that arrive between July and September.
- The timing of bonuses affects the cumulative base; the month in which they are paid changes the net outcome.
- Under net-pay guarantees the burden falls on the employer. Gross-up must then be recalculated monthly and budgeted for the full year.
- When an employee changes employer, the cumulative base carries over and the new employer must take it into account.
Legal basis
- Income Tax Law No. 193, Article 103 (tariff)
- Income Tax Law No. 193, Article 23/18 (minimum wage exemption)
- Stamp Duty Law No. 488
- Social Security Law No. 5510
This article is general information and does not replace professional assessment of a specific matter. Amounts and rates relate to the stated year; please verify the current provisions before acting.
