Two companies are co-funding one project, a joint marketing campaign, a shared platform build, a design system two brands are splitting the cost of, and you are the freelancer who delivered it. Now you need to invoice, and there is no obvious single client to bill. Sending one invoice to whichever company you happened to talk to most feels wrong, and asking both companies to just "sort it out between themselves" after the fact almost always ends with someone underpaying or nobody paying on time.
Splitting an invoice across two clients on one shared project is not complicated once you set it up correctly, but it has to be decided before you start work, not after you finish it. Here is how to structure it so both companies pay their share without confusion or delay.
Agree on the split before any work begins, not at invoicing time
The single biggest mistake is treating the payment split as a detail to sort out once the project wraps up. By then, both companies have their own internal approval process, and getting a split confirmed after delivery means chasing two separate finance teams simultaneously while the actual work is already done and your leverage is gone. Get the split percentage and the payment structure agreed in writing, ideally in the same conversation where scope and timeline get confirmed, before the first hour of work starts.
A 60/40 or 50/50 split is common, but the actual ratio should reflect why the two companies are co-funding the work in the first place, whether that is proportional usage, proportional budget contribution, or simply an even split because both benefit equally. Whatever the logic, write the exact percentage and rupee amounts into the agreement, not just the ratio, so there is no rounding ambiguity later.
Two separate invoices beats one invoice split between two payers
Send each company its own invoice for its own share, not one combined invoice addressed to both. A single invoice naming two companies creates confusion about who is actually responsible for payment, complicates each company's own accounts payable process, and makes GST treatment messier if one company is registered differently from the other. Two clean invoices, each for a defined amount, each addressed to one company, is far easier for both finance teams to process on their own schedules.
This also protects you if one company pays late and the other does not. With two separate invoices, you can follow up on the overdue one specifically without the paid company's transaction getting tangled into a dispute that has nothing to do with them. See the guide on following up on an overdue invoice for the sequence to use if one side falls behind while the other pays on time.
How GST works when the split crosses states
If you are GST registered and the two companies are based in different states, or one is inter-state and one is intra-state relative to you, each invoice is taxed independently based on that specific client's location, not based on the combined project. One invoice might carry IGST while the other carries CGST plus SGST, and that is correct, not an error to reconcile between the two. Treat each invoice exactly as you would if it were a completely unrelated client, because for GST purposes, it is.
Do not try to net the two invoices against each other or issue one company a credit note referencing the other's payment. They are two independent transactions that happen to relate to the same underlying project, and keeping them fully separate in your books avoids GST filing complications down the line.
What to do if one company wants to pay 100% and get reimbursed internally
Sometimes the two companies decide between themselves that one will pay you in full and recover its share from the other separately, outside your invoicing entirely. This is the simplest outcome for you, since it collapses the whole arrangement into one normal client relationship, but confirm it explicitly in writing before you invoice, since assuming this arrangement without confirmation is how invoices end up sent to the wrong company or split incorrectly. A short written confirmation from both companies, even a two-line email thread, is enough to remove any ambiguity.
If this is the arrangement, treat it as a completely standard single-client invoice from that point forward. The reimbursement between the two companies is not your concern or your paperwork.
Keeping the record straight on your end
Whichever structure you use, keep a simple record on your own end of the total project value, what each company owes, and what has actually been paid, so you are not piecing it together from two disconnected invoices. See the guide on creating a professional freelance invoice in India for the fields every invoice needs regardless of how many clients are splitting the cost.
Rinto lets you add each company as its own client, so a two-client split becomes two clean, separate invoices, each with its own status. You can see at a glance which company has paid and which is still pending, without digging through two disconnected records to piece the full picture back together.
Frequently Asked Questions
How do I invoice two companies for one shared freelance project?
Send each company a separate invoice for its own agreed share rather than one combined invoice addressed to both. Agree on the exact split percentage and rupee amounts before work begins, not after delivery, so there is no ambiguity or delay when it is time to invoice each side.
Should I send one invoice or two invoices when two clients split the cost?
Two separate invoices, each addressed to one company for its own share. A single invoice naming two companies creates confusion about who is responsible for payment, complicates each company's internal approval process, and makes GST treatment messier if the two companies are registered differently or based in different states.
How does GST work when splitting an invoice between two clients in different states?
Each invoice is taxed independently based on that specific client's location, exactly as if it were an unrelated project. One invoice might carry IGST while the other carries CGST and SGST, and that is correct. Do not net the two invoices against each other or issue cross-referencing credit notes between them, since they are separate transactions for GST purposes.
What if one client wants to pay the full amount and get reimbursed by the other company later?
This is the simplest outcome for you, since it becomes a normal single-client invoice. Get written confirmation from both companies before invoicing so there is no ambiguity about which company you should actually bill. The reimbursement arrangement between the two companies afterward is not your concern or paperwork to track.
When should the payment split be decided for a joint freelance project?
Before any work begins, ideally in the same conversation where scope and timeline are confirmed. Deciding the split after the project is delivered means chasing two separate finance teams simultaneously with no leverage, since the work is already done. Write the exact percentage and rupee amounts into the agreement upfront to avoid rounding disputes later.