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Home Improvement Loan Payment Calculator

Estimate the monthly payment on a fixed-rate home improvement loan from its amount, rate, and term.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.0

Market
Imperial · sales tax

Estimated monthly payment

405.53 $/month

High confidence

This is arithmetic only, not a loan offer or financial advice — actual loan terms, fees, and qualification depend on your specific lender.

Total paid over loan term
24331.67 $
Total interest paid
4331.67 $

At the values currently entered, the estimated monthly payment works out to 406 $/month. Note that loan amount sits at the low end of the range this calculator was checked against, so treat the output as indicative rather than settled. Figures are shown for United States, where IRC 2024 is the governing residential reference; switch the market above if you are building elsewhere.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Standard fixed-rate loan amortization formula: M = P x r x (1+r)^n / ((1+r)^n - 1), where r is the monthly interest rate and n is the number of monthly payments

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Frequently asked questions

Is this a loan offer or pre-approval?
No — this is a general arithmetic estimate based on the standard loan payment formula, not a real quote. Actual loan offers depend on your credit, lender, and specific loan product, and often include fees not captured here.
Why does a longer term reduce the payment but cost more overall?
Spreading the same principal over more months lowers each individual payment, but interest accrues for longer, so the total interest paid over the full term is higher — there's a real tradeoff between monthly affordability and total cost.
Does this include fees like origination charges?
No — this calculates payment on the principal and rate only. Add any origination fees, closing costs, or other charges to get the true total cost of a specific loan offer.