Note
Credit Terms Your Timeline Cannot Show
The timeline shows the billing stage pinned to the right week. The work is done, the acceptance form is signed, the invoice goes out on time. And then nothing happens for forty-five days.
Those forty-five days are not a mistake. They are the main contractor’s payment term. And the payment term is one of the most consequential numbers in a subcontractor’s business, one that almost never appears anywhere on the project timeline.
What is a payment credit term and why does it matter?
When a main contractor accepts a billing stage, they do not send payment immediately. Every main contractor, whether a developer, a property company, or a larger construction firm, has an internal payment cycle. That cycle might be 30 days after the invoice date, 45 days, or sometimes 60 to 90 days. The term is usually written in the subcontract, sometimes buried in a general conditions clause, and sometimes left entirely implicit.
The credit term means this: you can do everything correctly on your side, issue the invoice on time, attach the correct acceptance documents, and still wait the full term before cash arrives. The billing date and the payment date are two separate events, divided by a span that you agreed to when you signed the contract. Understanding this distinction is the starting point for any serious cash flow conversation.
Why does a billing gap of 30 days cost more than 30 days?
Consider a subcontractor running a commercial fit-out. Three billing stages are due across a six-week window. If the main contractor pays on 45-day terms, the cash from stage one arrives only after stage three has already been invoiced. The subcontractor is funding nearly the entire active installation period from their own working capital, even when every stage is billed correctly and on time.
That situation is normal in Thai construction. Main contractors running large commercial, industrial, or government projects often have credit obligations of their own upstream, and the terms they give subcontractors reflect that position. For smaller commercial subcontracts in Thailand, 30 to 60 days is common. Some operators running government work pay on 90-day cycles.
A billing stage that slips by 30 days does not just push cash back 30 days. It pushes it back 30 days plus the full credit term that starts from the new invoice date. A stage due on September 1 that goes out on October 1 is paid, on 45-day terms, on November 15 instead of October 16. That is 30 days of billing delay turning into 60 days of cash delay, because the credit term clock restarts with the later invoice date.
Can you negotiate credit terms before signing?
Sometimes, and it depends on the main contractor and the relationship. A subcontractor entering a new main contractor’s supplier list has less leverage than one who has delivered three successful stages on a previous project. The practical window for this conversation is before the contract is signed, not after the first invoice goes out.
Even when terms cannot be shortened, knowing them in advance changes the planning. A subcontractor who knows they will wait 60 days for stage two payment plans their shop production and material ordering around that gap. A subcontractor who discovers the 60-day term only after delivering stage two faces the same gap with far less runway to absorb it.
What the billing pin on your timeline actually shows
The billing pin on a well-built timeline marks when an invoice should be issued, not when cash is expected. Those are different dates, and treating them as the same is where cash flow planning goes wrong.
The invoice date is what the subcontractor controls. The payment date depends on the main contractor’s internal processes, their payment run schedule, and whether they have processed the acceptance documentation on their side. Once the invoice is issued with correct documentation, the subcontractor has done everything within their control. The credit term then runs from that date.
This is also why any meaningful guarantee for invoice-stage work speaks to invoices issued rather than to cash landing in the account. Payment depends on a counterparty’s internal cycle, which no party can guarantee on someone else’s behalf. Issuing the right invoice on the right date is the actionable side of the equation. Whether the transfer arrives on day 44 or day 51 of a 45-day term is outside that control.
A worked example: three stages, one payment cycle
A subcontractor invoices three stages over six weeks. Stage one is issued September 1. Stage two is issued September 15. Stage three is issued October 6. The main contractor runs payments on the 15th of each month, on 45-day terms.
Stage one: issued September 1, paid October 15 (44 days, within term). Stage two: issued September 15, paid October 15 (30 days, lands in the same payment run). Stage three: issued October 6, paid November 15 (40 days, falls in the next run).
Had stage three been issued September 30 instead of October 6, it would still have landed in the November 15 run, so those six days of delay cost nothing. Had it been issued October 17, it would have fallen into the December 15 run, adding 30 extra days to an already 40-day wait.
The point is not that payment cycles are complicated. The point is that knowing when your main contractor runs payments, and knowing your own invoice dates, tells you exactly what the cash gap will look like across the project. That information belongs in the same view as the billing pins, not discovered after the first invoice goes out.
FAQ
What if the credit term is not written anywhere in my contract?
Ask before signing, not after. A term that is not written is not zero days. Sending an invoice with no agreed term means waiting for whatever payment run the main contractor happens to run next, which could be 14 days or 90 days depending on their internal cycle. Ask for the payment term in writing during contract negotiation. A reasonable response is a number, not a reassurance that payment will arrive promptly.
Can I ask for a materials advance stage separate from the installation stages?
Sometimes. A materials procurement stage tied to a delivery milestone rather than an installation milestone does exist in some subcontracts, particularly on larger projects where material costs are significant and lead times are long. It requires the main contractor’s agreement and must be written into the contract before signing. Raising it after the contract is signed is difficult, and the main contractor has no obligation to add it.
Is 45 to 60 days the standard credit term in Thailand?
There is no fixed legal standard for private construction contracts in Thailand. Parties agree their own terms under the Civil and Commercial Code. In practice, 30 to 60 days is common for commercial subcontracts, with some larger operators running 90-day cycles, particularly on government work. What matters more than any market average is what your specific contract states, and whether your working capital plan accounts for that number before the project starts.
If you want to see what your own credit term gap looks like against your next billing stages, a 45-minute call is a practical place to start. We walk one live project together, mark each billing pin, and put a cash arrival date alongside it so the picture is complete before the project begins.