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

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Ireland → Vientiane, LA

Item Name	Destination	Amount	Conditions
Meal & Lodging	Vientiane, Laos	1926179.5 LAK per night	Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate	Vientiane, Laos	963090 LAK 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	Vientiane, Laos	642060 LAK per day	Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance	Vientiane, Laos	321030 LAK per day	Five-hour rate: applies to an absence abroad of between five and ten hours.