What is Interest Only Loan?

An interest-only loan requires only interest payments for a fixed period, with no principal reduction. Monthly payments are lower initially, but you owe the full principal at the end of the interest-only period (or when payments revert to principal + interest)

How accurate is the Interest Only Loan calculator?

The calculator uses the standard published formula for interest only loan. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Interest Only Loan calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Interest Only Loan calculator use?

The core formula is: Monthly interest payment = Principal × (Annual rate / 12). Each step in the calculation is shown so you can verify the result manually.

金融财务

Interest Only Loan Calculator

贷款和抵押贷款计算器

货币

贷款金额

年利率

贷款期限

年

额外还款

可选月额外还款

仅供参考。此工具不构成财务建议。在做出投资或财务决策之前，请咨询合格的财务顾问。

Formula-verified for precision

Reviewed October 2026

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Interest Only Loan Calculator

贷款和抵押贷款计算器

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