Which exchange rate should you use for a freight invoice?
First identify why you are converting the amount and which contractual or regulatory rule applies to that use. A rate published by a central bank does not automatically become the right rate for a contract, invoice, internal comparison or payment. Keep the source amount and conversion details, then confirm tax and accounting treatment with the person responsible for your business.
This guide describes an operational workflow; it does not determine the currency or rate required for a transaction. Check the contract and current applicable rules with your accountant or adviser.
Why can one shipment involve several currencies?
A shipment can contain commercial and financial values in different currencies. These currency roles may use the same currency, but do not assume they always do. For a freight forwarder, the customer invoice and carrier invoice are separate documents: the forwarder issues a sales invoice to the customer and checks the purchase invoice received from the carrier. The currency on one invoice does not rewrite the other.
What should you define at each currency stage?
Use a small decision table to make ownership clear before the invoice is prepared:
| Stage | Currency decision | Owner or question |
|---|---|---|
| Commercial agreement | Agreed price currency | Confirm the accepted customer or carrier rate and payment terms |
| Customer invoice | Sales-invoice denomination | Check the agreement and rules that apply to the customer invoice |
| Carrier invoice | Purchase-invoice denomination | Match the carrier’s invoice to the agreed buy rate and supporting documents |
| Internal analysis | Comparison currency | Choose a consistent basis for comparing revenue and costs; retain source values |
| Settlement | Paid or received currency | Reconcile the obligation to the amount sent or credited and any fees |
An internal analysis currency is a comparison choice. It should not automatically be treated as the statutory accounting or reporting currency. For the calculation of shipment profit after bringing values into a comparison currency, see the freight forwarder margin guide.
This table is a suggested operational framework, not a rule for choosing a legally required invoice currency or conversion date.
How should you document a currency conversion?
Keeping only the rate number is not enough to reproduce a conversion. As an operational practice, record:
| Information | What to retain |
|---|---|
| Original value | Amount and currency in the source document or agreement |
| Purpose | Why the conversion is made: internal comparison, document preparation or another use |
| Source and date | Rate source and date, in line with the applicable rule |
| Currency pair and direction | Source and destination currencies, such as EUR → RON |
| Quotation unit | Whether the published value is for one unit or a multiple such as 100 units |
| Result | Rate used and converted amount, while preserving the original value |
| Responsibility | Person who checked or approved it, if your process requires that |
The National Bank of Romania publishes dated reference rates in XML, with RON as the origin currency and quotation metadata for each currency. For a listed currency without a multiplier, read the value as RON per one unit of that currency. If a quote is for 100 units, the value is RON per 100 units. This source describes the rates BNR publishes; it does not, by itself, determine which rule applies to a contract or tax or accounting treatment.
If you consult the European Central Bank’s reference rates, note the ECB’s stated limitation: they are published for information purposes only and are not intended for market transactions, directly or indirectly as a benchmark. Do not treat them as a default settlement rate.
For a BNR quotation, the formula depends on direction and the published unit:
- Listed currency → RON: amount in the listed currency × rate ÷ multiplier. If no multiplier is shown, use 1.
- RON → listed currency: amount in RON ÷ rate × multiplier. If no multiplier is shown, use 1.
For a rate quoted per 100 units of the listed currency, the multiplier is 100 in both directions. For another source or currency pair, check its quotation convention before applying a formula. Keep the formula and quotation unit with the result, not just the converted amount.
What does a multi-currency shipment workflow look like?
Consider a schematic shipment where the customer price is agreed in EUR, the carrier invoices in RON, and the operations team compares values internally in EUR. These are three currency roles, not one total that should be rewritten into a single currency:
| Record | What to retain |
|---|---|
| Customer price | The agreed EUR amount and accepted commercial terms |
| Carrier invoice | The original RON amount and reference to the buy-side agreement |
| Internal comparison | The analysis currency, conversion used and link to the original amount |
This is a schematic example; it does not determine which currency or rate to use when issuing an invoice. Check current rules and consult your accountant about the treatment that applies to your documents and obligations.
How do you reconcile payment without confusing it with the invoice?
The invoice documents an obligation; settlement records what was actually transferred or received. Keep these items separate during reconciliation:
- the obligation’s amount and currency;
- the amount and currency sent or received;
- the amount credited to the account, if different;
- any conversion made by a bank or payment provider;
- fees and the documents supporting them.
A difference between an invoice and the credited amount can have several explanations. Do not automatically classify it as an exchange gain or loss; check the evidence and ask your accountant to determine the appropriate treatment.
What currency checks should you make before issuing or approving an invoice?
Use a short list focused on currency:
- Confirm the agreed currency and payment terms for the transaction.
- Keep the customer sales invoice separate from the purchase invoice received from the carrier.
- Check the conversion source and date against the agreement and applicable rules.
- Verify the currency pair, direction and quotation unit; do not treat a rate quoted per 100 units as a rate for one unit.
- Retain the original amount and currency alongside the converted amount.
- Record payment, settlement conversion and fees separately.
- Ask an accountant or adviser about tax or accounting treatment beyond the operational check.
For broader checks on supporting documents, references and proof before submission, use the road freight invoice-document checklist. The Romania e-Factura transport guide is separate, optional context for the Romanian e-invoicing process.
A consistent workflow starts by documenting who sets the currency and rate for each stage, which source and date are retained, and who resolves exceptions. Before turning the workflow into a procedure, validate any tax or accounting obligations with a qualified adviser.
