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

Complete
Ireland → Santarem, Portugal
Item Name Destination Amount Conditions
Meal & Lodging Azores, Portugal 156.5 EUR per night Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate Azores, Portugal 78.25 EUR 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 Azores, Portugal 52.17 EUR per day Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance Azores, Portugal 26.08 EUR per day Five-hour rate: applies to an absence abroad of between five and ten hours.
Incidentals Faro, Portugal 10 EUR per day Actual-cost destination (Note 1, Circular 07/2017): the overnight rate is the vouched cost of accommodation and three meals, the ten-hour rate is the vouched cost of two meals and the five-hour rate is the vouched cost of one meal, in each case plus this incidental expenses allowance of EUR 10 per day.
Meal & Lodging Funchal, Portugal 168 EUR per night Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate Funchal, Portugal 84 EUR 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 Funchal, Portugal 56 EUR per day Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance Funchal, Portugal 28 EUR per day Five-hour rate: applies to an absence abroad of between five and ten hours.
Meal & Lodging Lisbon, Portugal 181 EUR per night Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate Lisbon, Portugal 90.5 EUR 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 Lisbon, Portugal 60.33 EUR per day Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance Lisbon, Portugal 30.17 EUR per day Five-hour rate: applies to an absence abroad of between five and ten hours.
Meal & Lodging Oporto, Portugal 223 EUR per night Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate Oporto, Portugal 111.5 EUR 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 Oporto, Portugal 74.33 EUR per day Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance Oporto, Portugal 37.17 EUR per day Five-hour rate: applies to an absence abroad of between five and ten hours.
Meal & Lodging Portimao, Portugal 176 EUR per night Overnight rate covering accommodation and three meals for a 24-hour absence abroad on official business.
Vouched Accommodation (VA) Rate Portimao, Portugal 88 EUR 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 Portimao, Portugal 58.67 EUR per day Ten-hour rate: applies to an absence abroad of ten hours or more without an overnight stay.
Daily allowance Portimao, Portugal 29.33 EUR per day Five-hour rate: applies to an absence abroad of between five and ten hours.

Source URL:
https://www.revenue.ie/en/employing-people/documents/dper-circular-07-2017-subsistence-allowances-abroad.pdf
This source provides official travel rate information from revenue.ie.