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

Complete
United Kingdom → Reykjavik, Capital Region, IS
Item Name Destination Amount Conditions
Meals Reykjavik, Iceland 3866.5 ISK per day Over 5 hours rate: covers subsistence expenses for a period of more than 5 but less than 10 hours, measured by reference to the times of arrival in and departure from the foreign country.
Meals Reykjavik, Iceland 16368 ISK per day Over 10 hours rate: covers subsistence expenses for a period of more than 10 but less than 24 hours, measured by reference to the times of arrival in and departure from the foreign country.
Meals and incidentals Reykjavik, Iceland 19262 ISK per day 24 hour rate: covers the total cost of meals and daily hotel-to-office travel for a full 24-hour period.; The actual room rate is paid in addition to this amount (source shows the rate as 'plus room rate').
Lodging Reykjavik, Iceland 15990.5 ISK per night No specific conditions
Breakfast Reykjavik, Iceland 2008.5 ISK per meal No specific conditions
Lunch Reykjavik, Iceland 3489.5 ISK per meal No specific conditions
Dinner Reykjavik, Iceland 12125 ISK per meal No specific conditions
Incidentals Reykjavik, Iceland 0 ISK per day Source row labelled 'Other': other expenses incurred during the day; employers may use the individual meal and other rates instead of the over 5 hour, over 10 hour and 24 hour rates.
Drinks Reykjavik, Iceland 753.5 ISK per day No specific conditions
Transport Reykjavik, Iceland 885.5 ISK per day Covers daily travel between the employee's hotel and office.
Total residual Reykjavik, Iceland 19262 ISK per day Total residual rate: intended to cover the total cost of meals in a period of 24 hours plus the cost of daily travel between the employee’s hotel and office; the 24 hour rate is the sum of the room rate and this total residual rate.

Source URL:
https://www.gov.uk/guidance/expenses-rates-for-employees-travelling-outside-the-uk
This source provides official travel rate information from gov.uk.