This article explains how business expenses are reimbursed in Hong Kong, which costs may be treated as non‑taxable, and what documentation is required to comply with Inland Revenue Department (IRD) standards.
1. Mileage Reimbursement in Hong Kong
Hong Kong has no statutory or government‑set mileage reimbursement rate.
Common Company Mileage Rates
Employers typically use internal rates of:
HKD 3–6 per km
Mileage may be reimbursed tax‑free when:
The rate is reasonable, and
The employee maintains a mileage log documenting:
Date of travel
Kilometres driven
Purpose of the trip
When Mileage Becomes Taxable
If the mileage rate is excessive, the excess amount may be treated by the IRD as taxable employment income.
2. Receipt Requirements (General Rule)
In Hong Kong, expenses reimbursed without receipts are typically taxable because the employer cannot demonstrate that the cost was:
Wholly
Exclusively
And necessarily for business
(IRD’s strict test)
Employees should always submit original or digital receipts showing date, amount, vendor, and business purpose.
3. Business Travel Expense Rules
Hong Kong does not impose statutory limits on travel expenses. However, the IRD requires that expenses be:
Wholly, exclusively and necessarily incurred for business
Reasonable
Properly supported with documentation
Transportation Receipt Requirements
Receipts must be provided for:
Air travel
Train, MTR, intercity rail
Bus and public transit (where receipts are available)
Taxi
Taxi receipts (“taxi slips”) are acceptable even if handwritten or simplified
Ferry
Rental cars
Requires:
Rental contract
Fuel receipts
Parking/toll receipts
Cash expenses without receipts are usually taxable.
There is no government restriction on travel class (e.g., economy vs. business), but the company must justify premium classes as business‑necessary.
4. Documentation Required for Tax‑Free Reimbursement
To keep a reimbursement non‑taxable, employees must submit documentation proving the business nature of the cost, including:
Merchant receipt or invoice
Date of transaction
Amount paid
Description of item or service
Clear business purpose
For travel:
Hotel folio
Flight ticket
Boarding pass
Itinerary
No Tax ID Requirement
Hong Kong does not have VAT/GST, so:
No tax registration number is required on receipts
Standard merchant receipts are acceptable
5. Reimbursable vs. Taxable Expenses
Examples of Tax‑Free Reimbursable Expenses (with documentation)
Business transportation (taxi, public transit, mileage, tolls, parking)
Airfare and hotel accommodation
Business‑meeting meals
Client entertainment and marketing events
Work‑related supplies
Mobile/internet costs used for work (with pro‑rated calculation)
The IRD uses a strict standard: the expense must be wholly, exclusively, and necessarily for business.
Non‑Reimbursable or Taxable Personal Expenses
Generally taxable because they are personal benefits:
Gym/fitness memberships
Wellness or sports activities
Personal entertainment
Personal medical costs (unless employer‑mandated or statutory)
6. Per Diems in Hong Kong
Hong Kong has no official government per diem rates.
Employers may set internal daily allowances, but:
Per diems are tax‑free only if supported by receipts for actual expenses.
They become taxable allowances if:
Paid as a flat daily amount
No receipts are provided
The employee keeps the unused balance
7. Business Entertainment & Gifts
Business Entertainment
Meals with clients or business‑related events
Non‑taxable when supported by receipts and business purpose
Gifts
Modest client gifts: non‑taxable with receipts
Gifts to employees:
Large or valuable gifts may be taxable as a benefit
8. Record‑Keeping Requirements
Under IRD rules, employers must keep expense records for 7 years, including:
Receipts
Expense claims
Business justification
Approvals
Personal‑appearing expenses are often treated as taxable benefits.