WHT
Withholding tax (WHT) is a tax the payer deducts from a payment before sending it to the supplier, then remits to the tax authority on the supplier's behalf. The supplier receives a net amount plus a WHT certificate, which can often be claimed as a foreign tax credit at home.
Withholding tax is a mechanism where the payer of an invoice deducts a percentage of the gross amount, sends the net to the supplier, and pays the deducted portion directly to the tax authority in the payer's country. The tax authority then treats the deducted amount as a prepayment of the supplier's income tax liability in that jurisdiction. The supplier never touches the WHT cash, but receives a certificate proving the deduction was remitted.
WHT typically applies to cross-border payments for services, royalties, license fees, interest, dividends, technical assistance, management fees, and certain rental income. The logic is straightforward: a tax authority cannot easily chase a non-resident supplier for income tax, so it forces the local customer to collect the tax at source. Many emerging markets apply WHT aggressively, and several European countries apply it to royalties and interest paid abroad. Even within the EU, WHT on dividends and royalties paid to third countries remains common.
For AR and treasury teams selling cross-border services or licensing intellectual property, WHT is a permanent feature of the cash cycle, not an exception.
Statutory WHT rates vary widely by country and payment type. A rough landing zone:
Bilateral tax treaties (also called double taxation agreements) between the supplier's country and the customer's country override the statutory rate in most cases. A treaty might cut a 20% statutory WHT on services to 10%, or eliminate WHT on royalties entirely between two specific countries. To claim the treaty rate, the supplier almost always needs to provide a tax residency certificate (TRC) issued by their home tax authority, sometimes alongside a beneficial ownership declaration. Without that paperwork, the customer is legally required to apply the full statutory rate.
Here is the classic scenario. The supplier issues an invoice for 100,000 euros. The customer applies 15% WHT and remits 85,000 euros, then sends the 15,000 euros to its local tax authority. From the cash application team's perspective, this looks identical to a 15% short pay: invoice 100,000 euros, receipt 85,000 euros, difference 15,000 euros.
If the team codes that gap as a deduction or a dispute, three things go wrong. The AR aging report inflates because the residual 15,000 euros sits as open. Collections may chase the customer for a balance the customer has already legally paid. And the dispute volume metrics get distorted, masking real disputes underneath compliance noise.
The correct treatment is to post the 15,000 euros as a WHT receivable against the home country tax authority, not as a customer obligation. The invoice is fully settled from the customer's perspective the moment the WHT certificate arrives.
The WHT certificate is the linchpin document. It is issued by the customer (or sometimes the foreign tax authority) and confirms the amount of tax withheld, the period it covers, and the recipient supplier. Without this certificate, the supplier cannot prove the tax was paid, and the home tax authority will refuse the foreign tax credit.
A foreign tax credit lets the supplier offset the WHT paid abroad against its domestic corporate income tax bill, avoiding double taxation. If the certificate is missing, lost, or arrives years late, the WHT effectively becomes a sunk cost, eroding gross margin on the deal. Auditors will also flag uncertified WHT receivables as unrecoverable, forcing a write-off that hits the P&L.
Treasury and AR should treat the WHT certificate with the same urgency as the cash itself: chase it, log it, store it, and reconcile it monthly against the WHT receivable balance.
Suppliers leave significant money on the table through avoidable mistakes:
A gross-up clause flips the burden. It states that the customer must pay an additional amount such that the supplier receives the full invoiced sum after WHT. On a 100,000 euro invoice with 15% WHT, the customer pays 117,647 euros gross, the tax authority gets 17,647 euros, and the supplier receives 100,000 euros net. Gross-up language is standard in license agreements and large service contracts and should be a default ask in cross-border negotiations.
Manual WHT handling is slow, error-prone, and leaks margin. AI-native AR systems treat WHT as a first-class scenario inside cash application and order management.
An agentic system inspects each incoming payment, compares the received amount against the invoice, and recognises when the residual matches an expected WHT rate for that customer's country and payment type. Instead of routing the gap to a deduction queue, it codes the residual as a WHT receivable against the correct tax GL account. It then checks whether a WHT certificate has been received for the period, and if not, automatically issues a reminder to the customer with the specific invoice and amount referenced.
For treaty management, the system tracks the validity of each tax residency certificate, alerts treasury before expiry, and flags invoices where the customer applied a higher rate than the treaty allows. Over time, this turns WHT from a quiet margin leak into a managed, reconciled position, with cleaner AR aging, faster foreign tax credit claims, and fewer audit surprises.
No. VAT is a consumption tax added on top of the invoice and collected by the supplier from the customer. WHT is an income tax deducted from the invoice amount by the customer and remitted to the tax authority on the supplier's behalf. VAT increases the gross invoice; WHT reduces the net cash received.
Most likely they applied withholding tax. Many countries require the customer to deduct income tax from cross-border payments for services, royalties, or interest. The customer should send a WHT certificate confirming the 15,000 euros was remitted to their tax authority, which can then be claimed as a foreign tax credit at home.
You usually cannot avoid it entirely, but bilateral tax treaties often reduce the rate significantly, sometimes to zero. To claim the treaty rate, you typically need to provide the customer with a tax residency certificate from your home tax authority before they pay the invoice. A gross-up clause in the contract can also shift the economic burden back to the customer.
A WHT certificate is a document from the customer (or their tax authority) confirming the amount of tax withheld and remitted on your behalf. You need it to claim a foreign tax credit in your home country, which offsets the WHT against your domestic corporate income tax. Without the certificate, the WHT becomes an unrecoverable cost and auditors will not let you carry the receivable.
Neither. WHT is not a customer dispute or a discount, even though it looks like a short pay. It should be coded as a tax receivable against the home country tax authority, not against the customer. Treating it as a deduction inflates AR aging, distorts dispute metrics, and triggers unnecessary collection activity on amounts the customer has already legally paid.
A gross-up clause requires the customer to increase the payment so that the supplier receives the full invoiced amount after WHT is deducted. On a 100,000 euro invoice with 15% WHT and a gross-up, the customer pays 117,647 euros gross, the tax authority gets 17,647 euros, and the supplier nets 100,000 euros. Gross-up clauses are standard in royalty and large service contracts and should be a default negotiating position for cross-border deals.
