Start with the authorized locality and dates
Verify that the work address falls inside the selected locality and that the quoted hotel nights use the correct seasonal rate. Separate the base room price from lodging taxes. A mistake in the destination, month or tax treatment can make a valid quote look excessive.
Document the available options, dates, rates and the reason normal limits cannot meet the official travel requirement. A major event or a conference can affect availability, but the traveler does not approve an exception by finding a high price.
Request approval under the applicable policy
FTR §301-11.17 allows employees to request actual expense reimbursement up to 300% of the applicable per diem rate, subject to agency discretion and potentially a lower authorized limit. This is an upper regulatory ceiling, not a blanket multiplier travelers can apply to a hotel room or a guaranteed payment.
The same section permits an agency to authorize a rate for an alternative lodging location when advantageous to the government. Approval is typically obtained in advance. Retain the specific conditions, amounts and dates of the authorization.
Keep the estimate separate from the approved claim
The site calculator uses ordinary lodging ceilings. Entering a higher room price caps the nightly amount at the published rate; it does not model an actual expense authorization. Do not use its capped result as evidence that the excess is approved or denied.
For an authorized actual expense claim, record the actual itemized expenses and follow FTR §301-11.23 and the agency’s documentation requirements. Approval of a higher limit does not turn the full limit into a flat allowance.
Official sources
This guide explains a general method. Your travel authorization and applicable policy determine the claim. Report a correction.