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Shipping & Travel · 5 min read

GSA Per Diem Explained (CONUS Lodging + M&IE)

GSA CONUS per diem by ZIP or city: seasonal lodging, M&IE tiers, and 75% first/last travel days. Free browser calculator.

What this calculator does

GSA CONUS per diem by ZIP or city: seasonal lodging, M&IE tiers, and 75% first/last travel days. Free browser calculator.

Open the GSA Per Diem Calculator and enter your inputs. The result updates live in your browser.

How to use it

  1. Open the GSA Per Diem Calculator.
  2. Enter your values in the input fields.
  3. Read the result panel — it updates on every keystroke.
  4. Check the verification stamp and official source links.

Next steps

  • Try the GSA Per Diem Calculator with your real numbers.
  • Read the methodology section on the tool page for scope limits.
  • Compare with related tools in the same category.

FAQ

Is this financial or tax advice?

No. Estimates are informational only. See our disclaimer.

Where do the rates come from?

Official source pages linked from the calculator. See our editorial policy.

GSA Per Diem CalculatorCONUS lodging + M&IE by ZIP or city. FY2026 seasonal rates, 75% travel days.

Estimates only. This article is educational and is not financial, tax, investment, or legal advice. Verify rates and rules with primary sources or a licensed professional. Disclaimer · Verification policy.