Per Diem RatesFY 2027 federal travel allowances

Portsmouth per diem ratesNew Hampshire · FY 2027

Portsmouth’s peak is 1.44 times its low-season cap, the widest spread of the 5 seasonal areas in New Hampshire. Portsmouth’s high season has shifted: in FY 2021 it ran July to August, now October and June to September.

Oct 2026$186Nov 2026$129Dec 2026$129Jan 2027$129Feb 2027$129Mar 2027$129Apr 2027$129May 2027$129Jun 2027$186Jul 2027$186Aug 2027$186Sep 2027$186standard $113
Oct 2026$186Nov 2026$129Dec 2026$129Jan 2027$129Feb 2027$129Mar 2027$129Apr 2027$129May 2027$129Jun 2027$186Jul 2027$186Aug 2027$186Sep 2027$186standard $113
MonthsCapNights
October$18631
November to May$129212
June to September$186122

Four days in October

Monday, October 5, 2026, to Thursday: up to $817, three nights at the October cap plus $259 M&IE. Starting November 2 instead, in a low month, the same trip comes to $646.

Weighted by days, the cap sits 35.3% above the standard rate over the year.

$128$128$134$143$147$147$153standard $113$96FY21FY22FY23FY24FY25FY26FY27
$128$153$113FY21FY22FY23FY24FY25FY26FY27

Portsmouth since FY 2021

Since FY 2021 Portsmouth’s full-year average has grown 19.3%; ranked by that growth, Portsmouth sits between Rochester (NY) and Lynchburg (VA). Against FY 2026, Portsmouth’s full-year average rose 4.2%, between Crested Butte / Gunnison (CO) and Los Angeles (CA) among year-on-year changes. In FY 2021 Portsmouth ranked 117th of 293 by full-year average, between Santa Fe (NM) and Wallops Island (VA). Along the way: up 4.5% in FY 2023, up 6.9% in FY 2024, up 2.5% in FY 2025.

Portsmouth among the 295

$153 here$115$334
$153 here$115$334

Portsmouth’s full-year average lodging cap, $153 a night, ranks third of the 7 New Hampshire areas, between Laconia ($164) and Conway ($147). Portsmouth’s Oct, Jun–Sep peak lodging cap of $186 ranks 104th among the peak caps of the 295 areas, between Lebanon / Lincoln / West Lebanon (NH) and Savannah (GA). Nationally, Portsmouth is 131st of 295 on that measure, between Minneapolis / St. Paul (MN, $153) and Gulf Breeze (FL, $153). New Hampshire, area by area.