Skip to content
ENExplore Calculators

Per Diem Allowance Calculator

Work out per diem allowance instantly with clear inputs, formula shown and shareable results.

About Per Diem Allowance Calculator

A daily allowance for travel is exempt only up to a prescribed limit or the amount actually spent, whichever the rules require. Anything above the limit is treated as salary and taxed at your marginal rate.

Formula

Per diem

Exempt = days × min(rate, exempt limit); taxable = total - exempt

Worked example

With the default values below, Per Diem Allowance Calculator returns Total Allowance of $42,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Days Travelledaccepts 1–365
12
Allowance Per Dayminimum 0
3,500
Exempt Limit Per Dayminimum 0
2,500
Marginal Tax Rateaccepts 0–60 %
30 %

Results

Total Allowance
$42,000.00
Exempt Portion
$30,000.00
Taxable Portion
$12,000.00
Tax On The Excess
$3,600.00

Step by step

  1. 1Values used
  2. 2Per diem
  3. 3Total Allowance= 42,000.00
  4. 4Exempt Portion= 30,000.00
  5. 5Taxable Portion= 12,000.00
  6. 6Tax On The Excess= 3,600.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.

Frequently Asked Questions

Are receipts needed?

Within the prescribed limit usually not; above it evidence of actual expenditure is normally required.

Does the limit vary by location?

Yes. Overseas and metropolitan rates are typically higher than domestic ones.

Related Calculators

Per Diem Allowance Calculator | Calcrivo