The short answer
The invoice is correct, the work is fine, and the client asks whether you can do anything on the number. This is a negotiation rather than a dispute, and the rule is simple: never concede unconditionally.
Work out which of the 4 reasons you are dealing with.
Treat a reduction as something you sell rather than something you give.
Ask for speed, commitment or scope in return.
Where you do reduce it, issue a credit note rather than editing the invoice.
Say the number once, and let the silence do the rest.
The money on this invoice is the smaller part of what is at stake. A discount given without a reason attached reprices everything that follows, because you have demonstrated that the number was soft.
The 4 reasons they ask
What is happening | How it sounds | The right response |
|---|---|---|
Their budget overran | We came in over on the whole project | Trade: a payment plan or a longer commitment |
It is a habit | We always ask, no harm in trying | A polite no, once, with no explanation |
Genuine cash difficulty | Things are tight this quarter | Time rather than money: instalments |
Unspoken dissatisfaction | It just feels like a lot | Stop. This is a conversation about the work |
The 4th row is the one to catch, because it is a dispute wearing a discount's clothes. A client who is quietly unhappy will often ask for money off rather than say what is wrong, since that feels less confrontational to them. Reducing the invoice makes the actual problem invisible and leaves it to surface on the next project. Ask directly whether the work met expectations, and if it did not, handle it as a dispute instead.
The second row needs less thought than it gets. Some organisations ask every supplier for a reduction as policy, expect to be refused most of the time, and think no worse of you for it. A pleasant, brief no is the entire answer.
What a discount really costs
3 costs, and only 1 of them appears on the invoice.
The obvious one is the money. The second is the precedent: the next invoice is now a conversation, and the one after that. Clients are not cynical about this, they simply learn. An agency that reduced 1 invoice by 10% has told the client, truthfully, that its prices contain 10%.
The third is the hardest to see. A discount granted for nothing teaches the client that the way to influence you is to ask, which quietly changes who sets the terms of the relationship. A discount traded for something teaches the opposite, and costs exactly the same amount of money.
Trade, do not concede
If a number is coming down, something else should move. 4 things are worth more to you than most clients realise, and all of them cost the client little:
Speed. Payment within 7 days rather than 30, which is the best trade available and is discussed below.
Commitment. A 6-month arrangement rather than project-by-project, or the next phase confirmed now.
Scope. A smaller number for less work, which is a genuine reduction rather than a discount. Removing a deliverable is often easier for both sides than arguing about price.
Proof. A named case study, a quote, an introduction. Worth real money to a small agency and free to a happy client.
The phrasing matters less than the structure. Something like: I can do [amount] if we [specific thing]. That is 1 sentence, it is not a refusal, and it puts the next move on their side.
The best trade is speed
Where the client simply wants a lower number, the most useful thing to buy with it is faster payment. You give up margin and you get certainty and cash, which is often a better exchange than it looks.
A standard early payment discount is the mechanism, and the piece on payment terms explains the notation. What matters here is the arithmetic: forgoing a 2% reduction to be paid 20 days sooner works out at roughly 37% a year, which is expensive money. So use it deliberately, for an invoice where the cash genuinely helps, rather than as a standing offer on everything.
In the EU there is a small technical consequence worth knowing. Article 79 of the VAT Directive excludes from the taxable amount price reductions by way of discount for early payment, so the discount affects the VAT position as well as the net figure. Check how your own accounting treats it before offering one routinely.
Do it on paper properly
Where you agree a reduction on an invoice already issued, do not edit the invoice. Issue a credit note against it.
An amended invoice breaks the sequence, leaves 2 versions of the same number in circulation and confuses the client's matching routine, which is the opposite of what a clean invoice is for. A credit note keeps the audit trail intact and is what the client's own system expects.
State the reason on the credit note in a few words, and state what you got for it if anything. A line reading goodwill reduction against invoice 214, agreed with [name] on [date] in exchange for payment within 7 days is worth writing, because in 8 months nobody will remember and the next request will be easier to handle with the record in front of you.
When to simply say yes
Sometimes agreement is the right answer and the speed of it is the point.
Say yes quickly where the amount is small and the relationship is long, where you made a genuine error that is not worth arguing about, or where a line was outside what was agreed and you did not flag it at the time, which is the situation in unpriced extra work. Conceding a small amount immediately and without complaint buys a great deal of latitude later, and is cheaper than the same concession extracted after 3 emails.
The same applies to a queried expense line. A contested $180 is almost never worth the attention, and crediting it promptly makes the rest of the expense schedule much easier to defend.
When to say no
Say no when there is nothing on offer in return, when the amount is material, or when the request is simply a test. Do it in 1 short message, without a paragraph of justification, because explaining at length signals that the position is negotiable.
Something like: I am not able to move on this one, the pricing was set against the scope we agreed. Happy to look at the shape of the next phase if the budget is tight. Then stop. The most common mistake is filling the silence that follows, and the second most common is reopening it a week later.
A client who walks away over a refused discount on a completed invoice was going to be a problem anyway, and the limit on what that costs you is the subject of setting a credit limit.
FAQ
A client is asking for a discount on an invoice. What should I do?
Work out why they are asking, then trade rather than concede. Offer a reduction in exchange for faster payment, a longer commitment, reduced scope or a case study. An unconditional discount reprices every invoice that follows.
Should I ever give a discount after the work is done?
Yes, in narrow cases: small amounts on long relationships, a genuine error on your side, or a line you failed to flag at the time. Concede those quickly and without complaint, because speed is most of the value.
How do I say no without damaging the relationship?
Briefly and once. State that the pricing was set against the agreed scope, offer to look at the next phase if the budget is tight, and then stop talking. Long justifications signal that the position is open.
What should I ask for in return?
Payment within 7 days is usually the most valuable and the easiest for a client to agree. Beyond that: a longer commitment, a reduced deliverable, or a named case study and a referral.
How do I apply the discount to an issued invoice?
Issue a credit note rather than editing the invoice. Editing breaks the number sequence, puts 2 versions in circulation and confuses the client's matching routine. Note the reason and what you received in exchange.
What if the real problem is that they are unhappy with the work?
Then the discount request is a dispute in disguise. Ask directly whether the work met expectations. Reducing the invoice hides the problem and it reappears on the next project.
Not tax or legal advice. The accounting and VAT treatment of discounts and credit notes depends on your country and registration status. Confirm with your accountant before making a practice of it.