ARM vs fixed rate comparison

Worst case adjustable rate mortgage simulation with rate caps, compared with a fixed rate loan on total interest, payments, and the breakeven year. Results match the interactive calculator at everycalc.xyz; every response includes a calculator_url deep link to it.

get/api/v1/calculate/arm-vs-fixed

Request

  • Base URL: https://everycalc.xyz
  • URL: https://everycalc.xyz/api/v1/calculate/arm-vs-fixed
  • Auth: none declared

Query parameters

loan_amountnumber required

Loan amount in USD.

fixed_rate_pctnumber required

Fixed rate annual percent.

arm_start_rate_pctnumber required

ARM starting annual percent.

fixed_period_yearsnumber required

Years before the ARM first adjusts.

fully_indexed_rate_pctnumber required

Fully indexed annual percent the ARM can adjust toward.

initial_cap_pctnumber required

First adjustment cap in percentage points.

periodic_cap_pctnumber required

Cap per later adjustment in percentage points.

lifetime_cap_pctnumber required

Lifetime cap above the start rate in percentage points.

term_yearsnumber

Loan term in years; default 30.

Response

Calculation result.

Changes

No recorded changes to this operation across all 1 revision of this API.