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Accurately calculate changes to your monthly payment, interest saved, and shortened loan terms with extra mortgage payments to optimize your financial planning.
CAGR Calculator
Calculate the Compound Annual Growth Rate (CAGR) of your investments. Enter the initial value, final value, and number of years to get an accurate annualized return assessment.
FVIFA Calculator
Accurately calculate the Future Value Interest Factor of an Annuity (FVIFA) to evaluate future returns. Supports custom interest rates, periods, and decimal places.
Bond YTM Calculator
Accurately calculate the annualized yield of a bond held to maturity to assist with investment decisions and bond valuation analysis.
Chinese RMB Amount Converter
Accurately convert between numeric amounts and Chinese uppercase/lowercase financial characters to meet formatting standards for Chinese contracts, invoices, and banking.
CAGR Calculator
Calculate the Compound Annual Growth Rate (CAGR) of your investments. Enter the initial value, final value, and number of years to get an accurate annualized return assessment.
FVIFA Calculator
Accurately calculate the Future Value Interest Factor of an Annuity (FVIFA) to evaluate future returns. Supports custom interest rates, periods, and decimal places.
Bond YTM Calculator
Accurately calculate the annualized yield of a bond held to maturity to assist with investment decisions and bond valuation analysis.
Chinese RMB Amount Converter
Accurately convert between numeric amounts and Chinese uppercase/lowercase financial characters to meet formatting standards for Chinese contracts, invoices, and banking.
Return on Investment (ROI) Calculator
Enter your investment amount and dates to quickly calculate ROI and annualized return, helping you make smarter investment decisions.
When facing the pressure of high mortgage interest, making extra payments can significantly reduce your financial costs. Based on a standard amortization schedule, this tool recalculates the relationship between your remaining principal and interest rate to accurately output three key results: your adjusted monthly payment, total interest saved, and the shortened repayment term. The "remaining principal" is the core calculation variable, referring to the portion of the original loan that has not yet been paid off at the time of the extra payment.
Q: Why might my monthly payment stay the same after making an extra payment?
When you choose the "shorten term" strategy, the bank keeps your original monthly payment amount but increases the proportion of principal paid in each installment to accelerate the loan payoff.
Q: When is the best time to make extra payments on a standard amortized loan?
It is recommended to make extra payments within the first 1/3 of your loan term. During this period, the interest portion of your payments is at its highest, making the savings most significant.
Banks may charge a prepayment penalty (typically 1-3%). The calculated results reflect your true savings only after deducting these potential fees. For adjustable-rate mortgages (ARM), calculations should be updated based on the latest interest rate.
Typical example: For a $1,000,000, 30-year loan at a 5% interest rate, making a $200,000 extra payment in the 5th year and choosing to shorten the term can save approximately $280,000 in interest and reduce the total repayment period by 7 years and 4 months. We recommend prioritizing the "shorten term" strategy, as its IRR (Internal Rate of Return) is typically 1.5 to 2 percentage points higher than the "lower monthly payment" strategy.
