MasterTool

Per Diem Calculator

Calculate per diem from your own entered figures.

GSA per-diem rates lookup (official) — look up your destination's M&IE and lodging rates, then enter them in the tool last updated · reference source

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Currency: Amounts are calculated in the currency you select; this site does not convert between currencies and does not use live exchange rates.

Dated static reference; no live data is fetched. Verify current source values and assumptions before relying on results.

What this tool does

Calculate per diem from your own entered figures. Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.

How to use the Per Diem Calculator

  1. Enter or select travel days.
  2. Enter or select meals & incidental expenses (m&ie) rate per day ($).
  3. Enter or select lodging rate per night ($).
  4. Enter or select lodging nights.
  5. Enter or select m&ie on first and last travel days.
  6. Read the calculated result; change any measurement to compare alternatives.

Formula

M&IE total=travel days×M&IE rate (at 75% for the first and last day in the reduced mode); lodging total=lodging nights×lodging rate; total per diem=M&IE total+lodging total
days
Travel days
mie
Meals & incidental expenses (M&IE) rate per day ($)
lodging
Lodging rate per night ($)
nights
Lodging nights
mieMode
M&IE on first and last travel days

Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.

Worked example

For per diem calculator, the following measurements illustrate the exact method: Travel days: 5; Meals & incidental expenses (M&IE) rate per day ($): 75; Lodging rate per night ($): 150; Lodging nights: 4; M&IE on first and last travel days: full.

Inputs

  • Travel days5
  • Meals & incidental expenses (M&IE) rate per day ($)75
  • Lodging rate per night ($)150
  • Lodging nights4
  • M&IE on first and last travel daysFull M&IE rate every day

Result

  • Total per diem$975.00
  • M&IE total$375.00
  • Lodging total$600.00
  • Average per travel day$195.00

Results explained

Total per diem
Total per diem from the formula above. Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.
M&IE total
M&IE total from the formula above. Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.
Lodging total
Lodging total from the formula above. Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.
Average per travel day
Average per travel day from the formula above. Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.

Frequently asked questions

M&IE total=travel days×M&IE rate (at 75% for the first and last day in the reduced mode); lodging total=lodging nights×lodging rate; total per diem=M&IE total+lodging total

Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.

No. All numbers are entered by you or come from the dated reference table shown on this page; calculations run locally.

This is an estimate, not financial, tax or legal advice. Verify the inputs and output with official sources and a qualified professional.

Check period consistency, currency, percentage inputs and the assumptions: Rates are entered by you from the official GSA per-diem lookup for your destination (see source below) — GSA rates vary by location, month and fiscal year and are not preset here. The 75% first/last-day M&IE reduction is the common federal travel rule; your employer's policy may differ, and lodging taxes are usually reimbursed separately.