Business tax / Free financial tools

Business Expense Tax Savings Calculator

Compare federal ordinary income tax before and after a currently deductible expense.

US federal • 2026 · Instant results · No sign-up

Enable JavaScript to use this interactive calculator. The calculation method and assumptions are explained below.

How this calculator works

The calculator runs the progressive tax schedule twice. Savings equal tax before the eligible deduction minus tax after it, so crossing a bracket is handled without assuming one marginal rate applies to the whole expense.

Planning estimate only. Review the assumptions alongside the result before using it for a tax, financing or business decision.

IRS 2026 tax tables

Common questions

Does spending $1 save $1 in tax?

No. A deduction reduces taxable income. The after-tax cost remains the cash paid minus the tax saved.

Can I enter equipment purchases?

Only enter the portion legally deductible in the current period. Capitalization, depreciation and expensing eligibility must be established separately.

Put your numbers into context.

A calculator can help you ask better questions. Tell ZTax what you are planning and we will discuss the records, scope and support you need.

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