See how a regular payment reduces one outstanding debt.
Calculated in your browser. No account required. Illustrative estimate. Review the assumptions before using the result.View calculation table
How this calculation works
Interest each month = opening balance × annual rate / 12.
Each payment first covers interest. The remainder reduces principal. We repeat until the balance reaches zero, adjusting the last payment.
A worked example
A $1,200 balance with no interest and payments of $100 is repaid in 12 months.
Assumptions and limitations
Models one fixed-rate balance, not multiple-debt snowball or avalanche ordering. No new borrowing, fees, or missed payments. Maximum modeled term: 1,200 months.
Common questions
Why can my actual result differ?
Models one fixed-rate balance, not multiple-debt snowball or avalanche ordering. No new borrowing, fees, or missed payments. Maximum modeled term: 1,200 months.
Are my inputs saved?
The calculator code processes inputs within your browser and does not send them to our server or save them in browser storage. Downloads and copied summaries remain under your control.