You just received an invoice from a freelancer. Maybe it is your first time working with one. Maybe you have processed hundreds, but something on this one does not look right. Either way, the same question applies: what exactly should you check before approving payment?
Getting this process right matters. Pay a bad invoice and your accounting records are wrong. Sit on a good one and you damage a working relationship. This guide covers what to look for, what to flag, and how to keep the process clean on both sides.
Start with the Basics
Before looking at amounts, check whether the invoice is actually valid. A properly structured invoice should include:
Freelancer details. Their full legal name or registered business name, address, and contact information. If they are VAT-registered, their VAT number should be on the invoice. This is not optional in most jurisdictions.
Your company details. Your company name should match your official registration, not just the project name or the contact person. If the freelancer invoiced the wrong entity, flag it before paying.
Invoice number. A unique, sequential number. If you are receiving duplicate numbers, missing numbers, or random strings, that creates problems for your bookkeeping and theirs.
Dates. The invoice date (when it was issued) and the due date (when payment is expected). If there is no due date, refer to the contract. If there is no contract, you have a different problem.
Check the Line Items
This is where most issues surface. A good invoice breaks down work into specific, verifiable items. A bad one gives you one line that says "consulting services" with a large number next to it.
Match line items to the scope of work. If the contract says 20 hours of design work at $100/hour, the invoice should reflect that. If it says "design work, $2,500" with no breakdown, ask for one. You need the detail for your records, and the freelancer should be able to provide it.
Check the math. Hours multiplied by rate should equal the line total. Line totals should add up to the subtotal. Tax, if applicable, should be calculated on the correct base. Rounding errors happen. Intentional inflation is rare but worth verifying.
Look for out-of-scope items. If the invoice includes work that was not agreed on, that needs a conversation before approval. This is different from additional work the freelancer mentioned and you approved informally. If you approved it verbally, pay it. If you never discussed it, ask.
Verify expenses. Some contracts allow freelancers to invoice for agreed expenses (software licenses, travel, materials). Check whether the expenses listed were pre-approved and whether receipts are attached if required.
Tax and Compliance Checks
Tax handling varies by jurisdiction, but several things are consistent across borders.
VAT or sales tax. If the freelancer is registered, they should charge the correct rate. If you are in a different EU country and they invoiced you with VAT reverse charge, make sure the notation is there and their VAT number is valid. You can verify EU VAT numbers through the VIES system.
W-9 or tax ID (US). In the United States, you need a W-9 from any US-based freelancer you pay $600 or more in a calendar year. Do not process the first invoice without having the W-9 on file. You will need it for the 1099-NEC filing.
Currency. Confirm the invoice is in the agreed currency. If you agreed to pay in USD and the invoice is in EUR, one of you will absorb the conversion cost. Sort this out before the money moves.
Common Red Flags
Most freelancers send accurate invoices. But when issues come up, they tend to follow patterns.
No breakdown at all. A single lump sum with no detail is hard to audit and hard to approve. Even for fixed-price projects, the invoice should reference the deliverable and the agreement it ties back to.
Duplicate invoices. Same amount, different invoice number. Sometimes this is a revised version, sometimes it is a mistake, and sometimes the freelancer forgot they already invoiced. Check your records before paying.
Inconsistent rates. If the rate on the invoice does not match the contract, raise it immediately. This is usually a mistake on the freelancer's part, but better to catch it now than during an annual audit.
Missing payment details. If the invoice does not include bank account information, an IBAN, or a payment link, you cannot pay it. Ask for it rather than sitting on the invoice until someone follows up.
The Approval Process
Once you have reviewed the invoice and everything checks out, the approval process should be straightforward.
Route it correctly. In many companies, the person who receives the invoice is not the person who approves it, and neither of them processes the payment. Know who in your organization handles each step, and make sure the invoice gets to them.
Confirm receipt. A quick "invoice received, processing" email costs nothing and saves the freelancer from wondering whether their invoice landed in a spam folder. Most freelancers have been ghosted after invoicing at least once. Do not be that client.
Pay on time. If the due date says Net 15, pay within 15 days. If it says Net 30, pay within 30. Late payment is the fastest way to lose a good freelancer. If there is a delay on your end, communicate it. Silence is worse than bad news.
Keep a record. Store every invoice, every approval, and every payment confirmation. Your accountant will thank you at year-end. So will you, if there is ever a dispute.
What to Do When Something Is Wrong
If you spot an issue, do not just reject the invoice silently. Contact the freelancer, explain what needs to change, and give them a chance to issue a corrected version. Most issues are administrative, not adversarial.
Be specific. "The invoice is wrong" is not helpful. "Line 3 shows 25 hours but the timesheet shows 22" gives them something to work with.
If you are disputing scope or deliverables rather than just invoice accuracy, that is a contract discussion, not an invoicing issue. Handle it separately and do not hold payment on undisputed portions while you resolve the disputed ones.
Make the Process Easier
The manual version of invoice review involves spreadsheets, email threads, and someone in accounting chasing down approvals. It works, but it does not scale, and it creates exactly the kind of delays that damage freelancer relationships.
A client portal simplifies this. When your freelancer sends an invoice through a system that gives you a single view of every document, every contract, and every payment, the review process becomes a matter of clicking through rather than digging through email.
TAV's client portal gives clients access to every shared document: proposals, signed contracts, invoices, and payment status. No account required. No email chain per invoice. One link, everything there.
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