Look up per diem reimbursement rates and mileage deductions for business travel worldwide.

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Ireland → Port Harcourt, Rivers, NG

Item Name	Destination	Amount	Conditions
Meal & Lodging	Port Harcourt, Nigeria	95795.5 NGN per night	Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate	Port Harcourt, Nigeria	47897.75 NGN per night	Vouched Accommodation (VA) rate: paid in addition to the vouched cost of accommodation. Per Note 2 of Circular 07/2017 the VA rate should not be routinely used except for travel to Brussels, where the vouched cost of room plus the VA rate applies to all officers on overnight visits.
Daily allowance	Port Harcourt, Nigeria	31931.83 NGN per day	Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance	Port Harcourt, Nigeria	15965.92 NGN per day	Five-hour rate: applies to an absence abroad of between five and ten hours.