Take-home can fall even if the employer does not change gross wage during the year. The cause is not a pay cut being clawed back. Income tax is taken progressively on the base accumulated since the start of the year. A wage in the 15% band in January may have moved into the 20% or 27% band by autumn.
50,000 TL gross example
For an ordinary worker the worker premium is the same every month: SGK 7,000 TL, unemployment 500 TL. Stamp tax also stays at 128.80 TL. The only changing item is income tax. Monthly base is 42,500 TL, assuming a January start.
| Month | Income tax | Net |
|---|---|---|
| January | 2,163.68 TL | 40,207.52 TL |
| July | 3,962.25 TL | 38,408.95 TL |
| August | 2,884.90 TL | 39,486.30 TL |
| October | 4,634.90 TL | 37,736.30 TL |
In January tax is 15% and the exemption is 4,211.33 TL. In July the worker’s own base is already in the 20% band; the exemption is still 4,537.75 TL because it is a minimum-wage worker’s July transition month. That is why the July deduction is higher than August. In August the minimum-wage exemption rises to 5,615.10 TL and net recovers in part. In October the accumulated base crosses 400,000 TL, part of the month is 27% and net falls to one of the year’s lowest months.
This drop is not visible on minimum wage
On 33,030 TL gross, income tax due is zero for twelve months. The exemption fully covers a minimum-wage worker’s own tax. Net stays at 28,075.50 TL. The drop only appears on wages that produce tax above the exemption.
Starting mid-year zeroes the accumulated base. A person who starts in October pays tax from a lower band than a person who has been working since January, on the same gross. The start month on the calculator separates that gap. The exemption amount follows the calendar month; it is not reopened from the worker’s first day.