What it means
When a company sells goods or services, the price is only part of the agreement. The terms and conditions fill in everything else: when the invoice is due, what happens if payment is late, who owns the goods during delivery, how returns work and what happens if either side breaks the deal.
They turn a handshake into something that can be enforced. Many businesses use standard terms for all customers, which saves negotiating every sale from scratch.
A customer usually accepts them by signing, by placing an order after being shown them, or by clicking a box online. Larger or unusual deals are often negotiated, and the agreed terms then replace the standard ones.
Finance teams read terms closely because they drive cash flow and risk. Payment terms such as net 30 (payment due 30 days after invoice) decide how long cash is tied up in receivables, and clauses on late fees, deposits and cancellation affect revenue.
Limits on liability and warranties decide how much the company could have to pay if something goes wrong. Terms also affect accounting.
Rights of return, volume rebates, discounts for early payment and service guarantees can change how much revenue is recognised and when. A clause that looks like a detail in a contract can move a significant sum between reporting periods.
Both sides often have their own standard terms, which can conflict, a situation sometimes called the battle of the forms. The safest approach is to state clearly in the quote or order which terms apply, and to get the customer's agreement before work starts.
Good terms are clear, fair and kept up to date. Wording that is vague or hidden in small print can be challenged, and some consumer protection laws restrict unfair terms, so businesses should have them reviewed by a lawyer.
In practice
Real-world examples
Example 1
A wholesaler states net 30 payment terms on all invoices, with a 1.5% monthly late fee. Its credit controller uses the terms to chase an overdue customer and applies the late fee to the account.
Example 2
An online software company requires every new customer to tick a box accepting its terms before the free trial begins. The terms limit the company's liability to the fees paid in the previous year and explain how cancellation works.
Example 3
A building contractor agrees a project with a deposit of 20% on signing and staged payments after each milestone. The terms also state who pays if the client changes the design halfway through, protecting the contractor's margin.
Think of it
Terms and conditions are like the rules of a playground game. Everyone agrees to them before playing so that nobody changes the rules halfway through and everyone knows what happens if someone falls.
Formula
Calculation
Late payment charge = Overdue invoice amount x Monthly late fee rate x Months overdue
A customer owes an invoice of $20,000, and the supplier's terms state a late fee of 1.5% per month on overdue amounts. The invoice is paid 2 months late. Late payment charge = 20,000 x 0.015 x 2 = $600. The customer therefore owes 20,000 + 600 = $20,600 in total.Case study
Seen in the real world
Larkspur Design Studio is an illustrative, fictional agency that took on a large branding project for $80,000 with only a short email as the agreement. When the client delayed approvals for four months, the agency had no clause covering delays or extra work.
The agency absorbed about $12,000 of unpaid overtime, and the client disputed a final invoice because nothing in writing said when payment was due. The managing director realised that the cash gap came from missing terms and not from poor work.
She hired a lawyer to draft standard terms with a deposit, a payment schedule, a change-request process and a late fee. In this illustrative story, the agency used them on every later project, and its average collection time fell by almost two weeks. She also trained the project managers to point clients to the payment schedule at the kickoff meeting, which prevented most later disagreements.
Watch out
Common mistakes
- Relying on a short email or verbal agreement for a large deal, when the missing details are exactly what gets argued about later.
- Using standard terms that the customer never saw or agreed to, which may make them hard to enforce.
- Copying terms from another business without checking that they fit your own industry, risks and local law, because a clause that works for one trade can be unfair or unworkable in another.
Questions
People also ask
Do terms and conditions apply if the customer does not read them?
Usually yes, if the customer had a fair chance to see them and accepted them, although unusual or unfair clauses may be challenged.
Can terms be changed after a contract is signed?
Only by agreement, unless the contract itself allows one side to update them with proper notice.
What are the most important terms for a finance team to check?
Payment timing, late fees, cancellation and refund rules, price changes and limits on liability are usually the most important.