Home Improvement Loan Calculator — Renovation Loan Payment
Find your monthly payment and total cost for a home improvement or renovation loan — enter the loan amount, interest rate and term.
%
months
Fixed principal-and-interest payment for the loan term
30,415
total costPrincipal
82.2%
Interest
17.8%
- 1
Monthly interest rate
8% ÷ 12 ÷ 100 = 0.006667 - 2
Growth factor
(1 + 0.006667)ⁿ = 1.4898How one unit of principal grows over all n payments. - 3
Monthly payment
25,000 × 0.006667 × 1.4898 ÷ (1.4898 − 1) = 506.91
How does this calculator work?
Your monthly home improvement loan payment = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where r is the monthly interest rate and n is the number of payments. Enter the loan amount, annual rate and term (in months) to see your monthly payment and total interest cost. Add any origination fee to see the effective APR.
Formula
How this is calculated
A home improvement loan can take several forms — an unsecured personal loan, a home equity loan, or a cash-out refinance — but the payment maths is the same for all fixed-rate instalment loans. You borrow a principal amount P, repay it over n monthly payments at a fixed annual interest rate, and each payment covers both interest on the outstanding balance and a portion of the principal (reducing-balance amortisation). The monthly payment is P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where r is the monthly interest rate (annual ÷ 12 ÷ 100) and n is the total number of payments. Total interest is monthly payment × n − P.
Unsecured personal loans for home improvement typically carry higher rates (often 7–20% APR in 2024) than home equity loans or HELOCs, which are secured by the property (typically 7–10% APR) and may carry origination fees. Enter any origination or closing fee in the optional field to see the effective APR, which captures the true cost of borrowing when fees are included. The APR is computed by back-solving the amortisation formula on the net disbursed amount (principal minus upfront fee).
This calculator covers fixed-rate, fully-amortising loans only. Variable-rate HELOCs, interest-only periods, and prepayment penalties are not modelled. Figures are estimates; always compare the APR disclosed by the lender on the Loan Estimate document.
Frequently asked questions
It depends on your equity and rate sensitivity. Home equity loans and HELOCs offer lower rates because the home is collateral, but they take longer to close and risk foreclosure if you default. Unsecured personal loans are faster with no home risk but carry higher rates. For small projects (under $10,000) or renovations not tied to the home, a personal loan is often simpler.
A shorter term (e.g. 36 months) means a higher monthly payment but dramatically less total interest. A longer term (e.g. 84 months) lowers the monthly payment but increases total cost. If you can afford the higher payment, a shorter term usually saves more money than the difference implies.
An origination fee is a one-time charge by the lender (often 0.5–5% of the loan) for processing the loan. It increases the effective APR above the stated interest rate because you pay the fee but receive less net cash. The calculator computes the effective APR when you enter a fee, letting you compare loans with different fee structures.
Also known as
TG we-Calculate Editorial Team. (2026). Home Improvement Loan Calculator — Renovation Loan Payment [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/home-improvement-loan-calculator
TG we-Calculate Editorial Team. "Home Improvement Loan Calculator — Renovation Loan Payment." TG we-Calculate. 2026. https://we-calculate.com/calculator/home-improvement-loan-calculator.
TG we-Calculate Editorial Team, "Home Improvement Loan Calculator — Renovation Loan Payment," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/home-improvement-loan-calculator
@misc{wecalculate_home_improvement_loan_calculator, title = {Home Improvement Loan Calculator — Renovation Loan Payment}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/home-improvement-loan-calculator}}, year = {2026}, note = {TG we-Calculate} }
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