A household with a healthy surplus
$4,000 monthly income against $3,000 in listed expenses leaves a $1,000 net surplus, with a 10% debt-to-income ratio.
Personal budget calculator
This is an estimate for information only. It is not financial advice.
Result
Fill in the fields to see your result.
How it works
Every spending category you fill in is subtracted from your monthly income to reach a net balance, shown both per month and annualized. The debt-to-income ratio focuses specifically on debt payments as a share of income, since it is one of the figures lenders check most closely.
Leaving a category at zero simply excludes it — there is no need to force every field to a nonzero value.
Formulas used
Net balance
Net = Income − Σ expenses
Debt-to-income ratio
DTI = Debt payments ÷ Income
Worked examples
A budget running a deficit
The same expenses against a $2,500 income produce a $500 monthly deficit instead — spending exceeds what comes in.
Assumptions and limits
- All figures are entered as monthly amounts.
- Categories left at zero are excluded from the chart and totals.
- Savings and investing are not broken out separately — include them under "everything else" if you want them reflected in expenses.
Frequently asked questions
What counts as a debt payment for the ratio?
Recurring debt obligations — loan, credit card minimum, and similar payments — not everyday spending like groceries or utilities, which is why they get a separate field.
What debt-to-income ratio do lenders look for?
Many lenders view 36% or below favorably for a mortgage application, though the exact threshold and what counts as debt varies by lender and loan type.
Should I use gross or net income?
Use take-home (net, after-tax) income for a realistic picture of what is actually available to spend or save each month.
What if I have irregular income?
Use a conservative monthly average, or run the calculator for your lowest typical month to build a budget that still works when income dips.
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