Updated Budget Planning Tool

Affordability Calculator

Check if you can afford a new purchase without breaking your budget. Compare income, expenses, savings and scenarios to see what is comfortable, tight or risky for you.

Budget-Based Affordability Savings Timeline Estimates Affordability Score Scenario Comparison

Interactive Affordability Calculator for Everyday Money Decisions

Use the tabs to evaluate a purchase from different angles: monthly budget impact, savings timeline, overall affordability score and side-by-side scenario comparison. Adjust the inputs to match your real numbers and see how close a purchase comes to your comfort zone.

Rent or mortgage, utilities, groceries, transport and other must-pay basics.
Credit cards, loans and other required monthly debt payments.
If you are paying in full up front, you can enter 0 here and use the savings tab instead.
This is the share of your leftover money (after essentials & debts) you are comfortable committing.

This mode looks at your free cash after essentials and debt payments, then compares it with the monthly cost of a new purchase to classify it as comfortable, stretched or risky.

Use a conservative number. Regular savings accounts may be close to 0–3%.

This mode estimates how long it could take to reach your target price based on your current savings, planned monthly contributions and an assumed return.

Housing, utilities, insurance and other regular recurring bills.
Dining out, entertainment, shopping and flexible spending.

This mode builds a simple affordability score from your savings rate, debt-to-income ratio and emergency fund coverage. It is not a credit score, but a quick indicator of how flexible your budget is.

Use this mode to compare up to three options with different upfront and monthly costs. The calculator shows total cost over time and how much of your monthly income each option would use.

What Affordability Calculator Calculates

Use Affordability Calculator to estimate whether a planned purchase fits your monthly budget after essential expenses, debt payments, savings goals and available cash.

For more tools in this field, browse Finance Calculators.

Affordability Calculator Inputs

Affordability Calculator uses Monthly take-home income (after tax), Essential living expenses per month, Existing debt payments per month, Estimated monthly cost of this purchase, Safe share of free cash for this purchase (%).

Affordability Calculator Formula or Method

  • The calculator is only as accurate as the numbers and assumptions you enter. It uses straightforward formulas—no hidden rules—to highlight the relationship between income, expenses, savings and purchases. Treat the results as planning guidance, not a guarantee.

Reading Affordability Calculator Results

The results include Free cash after essentials & debts, Safe monthly budget for this purchase, Entered purchase monthly cost, Share of free cash used, Affordability verdict, Budget note.

Alongside Affordability Calculator, use House Affordability Calculator to find out how much house you can afford based on your income, debts, mortgage rate, and down payment. Works for the U.S. and any other country.

For a different result from Affordability Calculator, Mortgage Calculator can estimate monthly mortgage payments, view amortization, test affordability, compare loans, and analyze refinance savings in one place.

Calculators Related to Affordability Calculator

After checking Affordability Calculator, use FHA Loan Calculator to estimate FHA monthly payment, mortgage insurance, home affordability, and refinance savings in one place. When you need to estimate how much house you can afford using income, debts, DTI limits, down payment, interest rate, taxes, insurance, PMI and HOA, use Home Affordability Calculator. Real Estate Calculator covers a separate task: analyze rental properties with cap rate, cash-on-cash return, NOI, ROI and gross rent multiplier (GRM) in one place.

After checking Affordability Calculator, use Business Loan Calculator to estimate business loan payments, total interest and cash flow impact in seconds. When you need to plan your monthly budget, apply the 50/30/20 rule, and estimate yearly savings with one simple tool, use Budget Calculator. Canadian Mortgage Calculator covers a separate task: calculate mortgage payments, CMHC insurance, land transfer tax and stress test affordability for Canadian home buyers.

After checking Affordability Calculator, use Refinance Break Even Calculator to compare your current mortgage with a new refinance offer. See break-even time, monthly savings, closing cost payback and total interest savings.

Frequently Asked Questions About Affordability Calculator

It is used to estimate whether a planned purchase fits your monthly budget after essential expenses, debt payments, savings goals and available cash.

It uses Monthly take-home income (after tax), Essential living expenses per month, Existing debt payments per month, Estimated monthly cost of this purchase, Safe share of free cash for this purchase (%).

Affordability Calculator uses The calculator is only as accurate as the numbers and assumptions you enter.

It returns Free cash after essentials & debts, Safe monthly budget for this purchase, Entered purchase monthly cost, Share of free cash used, Affordability verdict, Budget note.

Check Monthly take-home income (after tax), Essential living expenses per month, Existing debt payments per month first. Differences can also come from rounding, unit choices, or a different formula or rule set.