@caglarcan
Form 2555 kullanarak gelirinizin 105 bin dolarlık kısmını exclude etmeniz, kalanı için vergi beyanı yapmanız gerekiyor. Turbotax bunu yaptığınızı düşünerek (105 bin + beyan ettiğiniz tutar kadar geliriniz olduğunu düşünerek) size vergi çıkarıyor.
The Foreign Earned Income Exclusion (FEIE, using IRS Form 2555) allows you to exclude a certain amount of your FOREIGN EARNED income from US tax. For tax year 2019 (filing in 2020) the exclusion amount is $105,900. What this means is that if, for example, you earned $112,000 in 2018, you can subtract $105,900 from that leaving $6,100 as taxable by the US. But beware: this $6,100 is taxable at tax rates applying to $112,000 (the so-called "stacking rule"). The exclusion applies only to foreign earned income. Other income, such as pensions, interest, dividends, capital gains, US-sourced income, etc., cannot be excluded with the FEIE. You are liable for full US tax on this type of income.
https://www.americansabroad.org/us-taxes-abroad-for-dummies-update/