Mammoth Lakes Per Diem Rate (FY2026)
Mono · California · Official U.S. GSA federal per diem
For fiscal year 2026, the GSA per diem rate for Mammoth Lakes is $86/day for meals & incidental expenses (M&IE) and $139–$195/night for lodging depending on the month, compared with the standard $178/day CONUS rate ($110 lodging + $68 M&IE). Lodging peaks in January and is lowest in April.
M&IE / day
$86
Flat all year
Lodging low
$139
April
Lodging peak
$195
January
Full daily (peak)
$281
Lodging + M&IE
Example trip
A 4-night business trip to Mammoth Lakes in January totals $1,167 — $780 lodging (4 nights) + $387 M&IE (5 days, first & last day at 75%).
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Mammoth Lakes lodging rate by month (FY2026)
Nightly lodging caps for Mammoth Lakes. M&IE is flat at $86/day and does not change by month.
| Month | Lodging / night | Season |
|---|---|---|
| Jan | $195 | Peak |
| Feb | $195 | Peak |
| Mar | $195 | Peak |
| Apr | $139 | Low |
| May | $139 | Low |
| Jun | $139 | Low |
| Jul | $139 | Low |
| Aug | $139 | Low |
| Sep | $139 | Low |
| Oct | $139 | Low |
| Nov | $139 | Low |
| Dec | $195 | Peak |
Mammoth Lakes per diem FAQ
- What is the per diem rate for Mammoth Lakes?
- For FY2026, the GSA per diem rate for Mammoth Lakes, California is $86 per day for meals and incidental expenses (M&IE) and $139–$195/night for lodging depending on the month. The standard CONUS rate, for comparison, is $178 per day ($110 lodging + $68 M&IE).
- Why does lodging per diem in Mammoth Lakes change by month?
- GSA sets seasonal lodging caps for high-demand areas. In Mammoth Lakes, lodging is highest in January at $195/night and lowest in April at $139/night. M&IE stays flat at $86/day all year.
- What is the tax-free travel nurse stipend cap in Mammoth Lakes?
- Tax-free housing and meal stipends for travel nurses are capped at the GSA per diem for the assignment location. In Mammoth Lakes the full daily cap is up to $281 (peak-month lodging + $86 M&IE). A stipend at or below the GSA rate is tax-free; anything above is taxable wages.
Other California per diem areas
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