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Payment Terms That Mean Something

Terms printed on an invoice were never agreed. They appeared at the end of the job, on a document the customer received after the work was done, and if challenged they are difficult to rely on.

For a software-side reference alongside this discussion of pre-work decisions, contracts, and small-business administration, Monitask has this resource.

Terms stated in the quote and accepted with it are part of the agreement. The difference costs nothing and it is the difference between a term and a hope.

What to state

When payment is due. A number of days, from a defined event — receipt of invoice, completion of work, delivery. "Net 30" without saying thirty days from what is an ambiguity somebody will use.

How to pay. Bank transfer, card, cheque, and which of these carries a charge.

What happens if it is late. Whether interest applies and at what rate, and whether costs of recovery will be added. Both are subject to local law and worth checking rather than assuming.

And who is being invoiced. The legal entity, confirmed at quoting stage, because an invoice addressed to the wrong party is a query rather than a debt.

Where to state it

In the quote, in the body, not in a footer.

A term in small print at the bottom of a two-page document is a term the customer did not read, and while that may not be decisive legally, it is decisive practically: somebody who feels ambushed disputes, and a dispute costs more than the term was worth.

Repeat it on the invoice. Not as the first appearance but as a reminder of something already agreed.

The default position where nothing is agreed

Jurisdictions differ and this is not legal advice.

In the UK, the Late Payment of Commercial Debts (Interest) Act 1998 sets a statutory default for business-to-business transactions where no terms are agreed, and provides for interest and fixed recovery costs. (UK legislation — check the current position and thresholds.)

In the US, there is no equivalent federal default for private commercial transactions, and the position depends on state law and on whether prompt payment statutes apply — which they generally do only to public contracts. (General position; verify for your state.)

Where you are dealing with consumers rather than businesses, different rules apply again, and they are usually more protective of the customer.

The practical conclusion is the same everywhere: agree terms explicitly rather than relying on a default you have not verified.

What terms to choose

Shorter than you think, and enforced.

Xero puts the average wait for a US small-business invoice at 28.8 days. (Accounting software vendor.) Where common terms are thirty days, that average means the terms are roughly working and the tail is long.

Fourteen days is defensible for small jobs and is increasingly normal for trades.

Seven days or on completion works for consumer work where the customer is present and the amount is modest.

And thirty days is what most business customers will impose regardless of what you write, because it fits their payment run. Knowing that in advance lets you price for it rather than discover it.

The payment run problem

Larger customers pay on cycles, not on receipt.

An invoice arriving the day after a payment run waits for the next one, which can add three or four weeks to a thirty-day term without anybody being late.

Ask when the run is. It is a routine question, the answer is not confidential, and timing the invoice to it is one of the few genuinely free improvements available.

Making the terms visible at the right moments

Three times, and no more.

In the quote, as part of what is being agreed.

On the invoice, as a restatement with the due date calculated rather than expressed as a period — "due 14 September" beats "14 days" because it removes the arithmetic and the ambiguity about the start date.

And in the first reminder, quoting the agreed term rather than asserting a new one. The first fortnight after the due date is where tone matters most.

Beyond that, repetition reads as nagging and adds nothing the customer does not know.

Terms you should not offer

"Payment on satisfaction." Satisfaction is not a defined event and it hands the timing entirely to the customer.

Open-ended retentions on small jobs, where a percentage is held indefinitely against unspecified future issues.

And terms materially longer than your own suppliers give you, which is financing the customer out of your own working capital and is the position that produces the fees other people charge you.

Changing terms with an existing customer

Not retrospectively, and not on an invoice.

A customer who has been on thirty days for two years does not become a fourteen-day customer because the invoice says so. They will pay on thirty as they always have, and the only thing the changed invoice produces is a conversation you did not plan.

Change them at the next quote, as part of the terms for the next piece of work, and say that it is a change. One line: "I've moved to fourteen-day terms from this year."

Most customers accept it without comment. The ones who cannot are usually constrained by their own systems rather than unwilling, and that is worth knowing before the job rather than after.

The one thing to get right

A defined due date on the invoice, agreed in advance.

Everything else on this page is refinement. A specific date that both parties saw before the work started removes the largest single category of payment dispute — the one where nobody is dishonest and nobody agrees when the money was due.

The short version

• Terms first seen on an invoice were announced, not agreed; terms in an accepted quote are part of the agreement
• State when payment is due from a defined event, how to pay, what happens if late, and who is being invoiced
• Put them in the body of the quote rather than a footer, and repeat them on the invoice as a reminder
• Defaults differ by jurisdiction: the UK has a statutory position for business-to-business, the US largely does not for private contracts
• Fourteen days is defensible for small jobs; large customers will apply thirty regardless, so price for it
• Ask when the payment run is, and never offer payment on satisfaction, open-ended retentions, or terms longer than your suppliers give you

For broader background on pre-work decisions, contracts, and small-business administration, see Companies House.