Fixed Deposit Rates of 3.5% vs. 3.7%: After-Tax Interest Difference on 1 Thousand Won Deposited for 1 Year Is KRW 16,920
Assuming 1 thousand won is placed in a fixed deposit for 1 year, an annual rate of 3.5% produces approximately KRW 296,100 in after-tax interest, while an annual rate of 3.7% produces approximately KRW 313,020. After applying the standard tax rate of 15.4%, the difference is KRW 16,920. Although the interest rates differ by 0.2% percentage points, the actual difference received is smaller than the pre-tax difference of KRW 20,000. The calculation is straightforward. Deposit 1 thousand won for 12 months