Ask five contractors and you get five answers: a third, half, materials plus a day, nothing until we start. All of them are defensible and most of them are wrong for the specific job in front of you, because the deposit is not a number — it is an answer to a question about who is carrying what risk before anybody has done anything.
What a deposit is actually for
Three things, in order of how much they matter.
That third one is underrated. A client who hesitates over a $1,200 deposit on a $12,000 job is telling you something useful about the final payment, and they are telling you now — while your exposure is a site visit and an afternoon of estimating rather than a completed job and an unpaid invoice.
Notice what is not on that list: profit. A deposit is not early profit, it is your own money coming back to you before you spend it. Treating it as income is how a busy shop with a full book runs out of cash in February.
The number that actually covers you
Start from the cost, not from a percentage. Work out what leaves your account before the first progress payment can be raised, then add a margin for the days of labour you will have sunk by then.
That table is the whole argument against a single company-wide percentage. A 30% deposit is generous on the flooring job, roughly right on the roof, and leaves you funding $6,000 of somebody else's cabinets on the remodel.
The rule that generalises: the deposit should cover the money you cannot get back if the client walks the day after you order. For most trades that is materials plus permits plus any restocking-fee exposure, rounded up to something that sounds like a considered number rather than a formula output.
The state rules almost nobody checks
Several states cap residential deposits by statute, and the caps are far lower than the industry habit. The best known is California, where a home improvement contract may not require a down payment of more than $1,000 or 10% of the contract price, whichever is less — excluding finance charges. On a $40,000 remodel that is $1,000, not $12,000.
Maryland limits it to one third of the contract price. Other states set their own limits or tie them to licence class, and several require deposits to be held in a way that keeps them identifiable. The specifics change; the pattern does not.
Getting this wrong is not a paperwork problem. In several states an over-large deposit is a licence-board matter, and the contract term is unenforceable regardless of what the client signed. Nobody has ever won that argument by pointing at a signature.
Design the schedule, not just the deposit
A well-built schedule makes the deposit question smaller, because the deposit stops being the only thing standing between you and a month of unfunded work.
Those four add to exactly the contract total. Check that they do — a schedule whose stages sum to 99.8% because somebody rounded each one separately is a small error that reads as a big carelessness when the client adds it up, and they will add it up.
Tie every stage to something observable. “Week two” is not a trigger; “materials delivered to site” is. The client can see a pallet on the driveway. They cannot see week two, and an invoice they cannot verify sits in a pile.
Leave a final payment worth chasing
The last payment should be small enough that the client is comfortable and large enough that you are motivated to finish the punch list. Ten percent works for most residential work. Five percent is too little to get anybody back for a door adjustment; twenty-five percent turns the last two days of a job into a negotiation.
The mirror of that: never let the amount of work remaining exceed the amount of money remaining. The moment those cross, you are working for free and the client's leverage becomes total. On a long job, check that ratio at every stage, not just at the start.
How to ask without sounding nervous
The deposit conversation goes wrong when it sounds like a favour. It is not a favour, it is the ordinary terms of the trade, and it should be stated the way ordinary terms are stated: on the document, in the same size type as everything else, before anybody talks about it.
“A 25% deposit of $4,492.62 confirms the booking and covers materials. The balance is invoiced in three stages, shown below.” That is the whole script. It is on the quote, so by the time it is discussed it has already been read, and the client's question is about timing rather than principle.
What does not work: asking for a deposit that was never mentioned in the quote. That reads as a change in terms even when it is not, and it converts a signed job into a renegotiation at the worst possible moment.
Say what happens if it falls through
Two sentences on the quote, and they protect both directions.
Contractors resist the left column because it sounds like inviting cancellation. In practice it does the opposite: a client who knows the terms of walking away is markedly less likely to walk away, because the ambiguity that makes people hesitate has been removed.
When the client says they never pay deposits
Some clients say this as a negotiating position and some say it because they were burned by a contractor who took a deposit and vanished — which happens often enough that the fear is entirely rational. The two need different responses and they are easy to tell apart: the negotiator argues about the principle, the burned client tells you a story.
For the burned client, the answer is not a smaller deposit, it is visibility. Offer to invoice the deposit against the supplier order rather than as a lump: “The deposit covers the material order. I will send you the supplier invoice and the delivery date the day it is placed.” You have not reduced your protection at all; you have converted an act of faith into a transaction with a receipt.
For the negotiator, hold the line and be pleasant about it. “I understand, and I do not book work without one — it is how I make sure the materials for your job are paid for. If that does not work for you I would rather say so now than three weeks in.” A contractor who folds on the deposit has told the client that the other terms are negotiable too, and that lesson gets applied at every subsequent decision on the job.
The client who wants to buy the materials
This comes up most on jobs with a large, visible material component — flooring, tile, fixtures, appliances — and it is usually proposed as a way around the deposit. Sometimes it is fine. Often it costs everybody money, and the reasons are worth being able to explain in thirty seconds.
That last row is the one to say out loud. If the client supplies the material, your workmanship warranty cannot cover material failure — and the two are almost impossible for a homeowner to tell apart when something goes wrong eighteen months later. Put it on the quote in one sentence and let them decide with the information.
If they still want to supply it, agree to it and adjust the deposit down accordingly, because your pre-invoice exposure genuinely has dropped. Just move the material delivery to a stated milestone with a date, so their purchasing decision cannot silently become your schedule problem.
Commercial and GC work runs on different rules
Everything above is residential. Working under a general contractor, the deposit usually does not exist at all: you are on a schedule of values, billing monthly against percentage complete, with retainage held back and paid at closeout.
Retainage at 10% on a $180,000 subcontract is $18,000 of your money sitting in somebody else's account for the length of the project and often months past it. That is not a payment term, it is a working-capital decision, and it should be priced into the bid rather than discovered in month four.
The pay-when-paid versus pay-if-paid distinction is worth understanding properly. One is a timing mechanism and one shifts the risk of the owner's non-payment onto you. Their enforceability varies by state and the wording is often only a few characters apart.
What the deposit conversation tells you
Independent of the money, this exchange is the highest-information moment in the whole sale, because it is the first time the client has to do something rather than agree with something.
A client who pays the deposit the same day, without discussion, is telling you they have the money, they have decided, and they want the work done. A client who pays after two reminders will pay every subsequent invoice after two reminders, and you should price your patience accordingly. A client who negotiates the deposit down and then asks for the start date to be brought forward is telling you which of the two things they actually care about.
None of that is a reason to refuse work. It is a reason to set the payment schedule tighter, to keep the amount outstanding smaller at every stage, and to make sure the final payment is not the first time you find out how this household treats an invoice.
Card, transfer, or cheque
Take the payment method that gets the deposit into your account fastest with the least friction for the client, and price the difference honestly if you pass on a card fee. Bank transfer is the cheapest rail by a wide margin on a five-figure deposit — the fee difference between a card and an ACH transfer on a $4,492.62 deposit is real money, every time.
And whatever the rail: send a receipt the same day, showing the deposit against the contract total and the remaining balance. That single document prevents the most common invoicing dispute in the trade, which is not about the amount — it is about whether the deposit was counted.
