How to Pay International Contractors: Platforms, Compliance and Hidden Costs
Paying international contractors sounds straightforward until you try it. Currency conversion, local tax withholding requirements, documentation obligations and platform fees all create friction and cost that companies frequently underestimate. For contractors, understanding how you are paid - and what your client's obligations are - protects your income and your compliance position.
The documentation requirements - W-8 BEN and beyond
US companies that pay international contractors are not required to withhold income tax from those payments - but they are required to have the contractor complete a Form W-8 BEN (for individuals) or W-8 BEN-E (for entities) to document the contractor's foreign status. This form should be collected before the first payment and kept on file. It establishes that the contractor is not a US person and confirms the applicable withholding rate under any relevant tax treaty. Companies that fail to collect this documentation may be required to apply backup withholding at 30% - a significant cost that falls on the contractor.
For non-US companies paying international contractors, the documentation requirements depend on the jurisdiction. EU companies typically need to verify the contractor's tax residency and applicable VAT position. UK companies must check whether the contractor is subject to UK payroll tax obligations under the off-payroll working rules if working through a UK client.
Payment platform options and their real costs
The options for paying international contractors range from traditional bank wire transfers to specialist global payment platforms. Bank wires are reliable but expensive - fees of $25 to $50 per transaction plus exchange rate margins of 1 to 3% above mid-market rate are typical. PayPal and Wise are popular for smaller payments but have percentage-based fees that become significant at contractor invoice values. Dedicated global payroll platforms - Deel, Remote, Gusto Global, Rippling - offer more complete solutions that handle compliance documentation, tax form generation and multi-currency payments in one workflow, typically at a per-contractor monthly fee.
For companies with more than a handful of international contractors, the administration cost of managing payments manually typically exceeds the platform fees of a specialist provider within the first few months. The compliance risk of manual management is harder to quantify but real.
Currency risk - often the biggest hidden cost
A contractor earning in US dollars but living and spending in euros or sterling faces continuous currency exposure. A 10% movement in the dollar-euro rate over a six-month contract represents a 10% change in effective income with no change in the underlying rate. For contractors billing significant amounts, this is not a theoretical risk - it is a recurring financial reality.
Practical approaches include invoicing in your spending currency where the client will accept it, using a multi-currency account (Wise, Revolut Business) to hold income in multiple currencies and convert when the rate is favourable, or timing large conversions around rate movements. Forward contracts - available through specialist FX brokers - allow contractors to lock in a rate for future payments, providing budget certainty at the cost of forgoing upside if rates move in your favour.
Contractor-of-record services for complex engagements
For companies that want to engage contractors in countries where they have no local entity, contractor-of-record (COR) services provide a compliant structure. The COR provider employs or contracts the worker locally, handling all local compliance, payroll and documentation, and the client company pays the COR provider. This is particularly useful for engagements in countries with complex local labour law, mandatory social security contributions for contractors, or where the engagement is at risk of triggering a permanent establishment for the hiring company. The cost is typically a percentage of the contractor's invoice value, ranging from 5 to 15% depending on the country and provider.
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Sources & further reading
1. Gusto - 8 effective ways to pay international contractors
2. Deel - Best payroll for global contractors 2026