Loan Interest Calculator (Amortized · Equal Principal · Bullet)
Compare monthly payments and total interest across the three repayment methods for any loan — principal, rate and term.
Also available in 한국어
The amounts you entered are included in the link. Anyone with the link sees the same result.
Monthly payment (equal payment)
1,467원
- Total interest
- 228,120원
- Total repayment
- 528,120원
- Method
- equal payment
How it was calculated
- 1,467원01Monthly payment (equal payment)
P 300,000 × monthly rate 0.3500% × (1+i)^360 ÷ ((1+i)^360 − 1)
Basis: Standard amortization formula (annuity)
- 228,120원02Total interest (full term)
- 528,120원03Total repayment (principal + interest)
principal 300,000 + interest 228,120
- 04Note — comparing repayment methods
Equal payment keeps a flat monthly burden but costs more interest; equal principal starts higher but costs less; bullet has the lowest early burden but the highest total interest.
Reference simulation only, not tax advice. Verify with official sources before filing or paying.