Interest-Only Payment Calculator
Monthly interest on a loan.
Estimates only — always confirm the figures with your lender or a licensed professional before you commit.
This tool gives approximate results for planning only. It is not financial advice. Verify every number against your official loan, tax, or payroll documents.
Enter the values and press Calculate.
How to use Interest-Only Payment Calculator
Interest-only loans pay just the interest each month. This tool shows that monthly and yearly amount.
Open Interest-Only Payment Calculator on toolpermarket and enter your values above.
Enter the loan principal and the annual rate in the fields above, then press Calculate.
Read the result below the form. You can change any input and press Calculate again to compare scenarios.
Worked example. A $200,000 loan at 5 percent costs about $833 a month in interest.
When to use Interest-Only Payment Calculator. Use it to compare interest-only offers or understand loan carrying cost.
When you actually reach for this
- Use it to compare interest-only offers or understand loan carrying cost.
Where this tool stops being accurate
- Assumes a fixed rate for the whole term and equal payments; it excludes taxes, insurance, and fees, and does not model rate changes.
- Results depend on the exact inputs - a small rate or term change can flip the cheaper option.
Frequently asked questions
Does this pay down the loan?
No. Interest-only means the principal stays; this shows the interest portion alone. For anything binding, check with a qualified professional about your specific situation.
Can the rate be zero?
At 0 percent the interest payment is zero, which the tool returns. For anything binding, check with a qualified professional about your specific situation.
Does this include taxes and insurance?
No. It models principal and interest from the rate and term you enter; add taxes, insurance, and fees separately for the true monthly cost. For anything binding, check with a qualified professional about your specific situation.