Free Travel Expense Reimbursement calculator with clear step-by-step results.
Applies the mechanics most corporate travel policies actually use: a reduced per diem on the first and last days, a deduction for every meal the host provides, a lodging cap applied per night rather than per trip, and transport reimbursed on receipts.
Per diem
Per diem = full days x rate + travel days x rate x travel-day percentage - provided meals x deduction
Lodging
Reimbursed = min(receipts, cap per night x nights)
Per diem rates, lodging caps and the tax treatment of reimbursements are set by employer policy and tax authority rules that vary by destination and change annually. Confirm against current policy before claiming.
Because you are only travelling for part of those days. Seventy-five percent is the most common convention, though some policies use a meal-by-meal breakdown instead.
Usually only with pre-approved exception, for example during a conference when no compliant rate is available. Get that agreed in writing before booking.