A customer approves a custom shower enclosure, an unusual HVAC component or specialty flooring, and your supplier wants payment before placing the order. Naturally, you want to avoid financing that expense out of your own pocket. But asking for a customer deposit is not simply a matter of choosing a percentage and sending a payment link.
You need three things to work together: a clearly described material order, a payment schedule the customer understands, and compliance with the rules that apply to the job. This is especially important for residential home-improvement contractors. Some states restrict how much can be collected before work begins, even when materials must be specially ordered.
Start by documenting the special-order item
Tell the customer exactly what makes the material different from a common stocked item. Record the product description, relevant model or size, finish or color, intended use, estimated delivery window and any important ordering assumptions. Confirm the vendor's current quote and how long it remains valid before presenting the amount to the customer.
“Special-order parts” is often too vague for a meaningful agreement. A better description is “Custom shower glass panel, measured for the upstairs bathroom, clear tempered finish, dimensions to be verified before order.” Include who will verify measurements and what happens if the customer's preferred finish becomes unavailable.
Where appropriate, separate material cost from installation labor on the estimate, without implying the contractor is obligated to reveal proprietary supplier prices. The customer primarily needs to understand what is being supplied, what work is included and what they will pay.
Very important: home-improvement deposit limits can override your plan
California example: The Contractors State License Board (CSLB) states that, for covered home-improvement contracts, the down payment generally cannot exceed $1,000 or 10% of the contract price, whichever is less. The CSLB explicitly says there is no special-order-materials exception to that limit. A rare qualifying blanket performance and payment bond can create an exception, but contractors should not assume they qualify.
See the CSLB home-improvement contract rules and its consumer guide. The guide explains that additional progress payments are tied to work performed or materials delivered, rather than merely to the contractor's desire to pay a supplier up front.
This is a concrete reason not to copy an online article that recommends “always collect 50% before ordering.” A $6,000 covered California home-improvement contract, for example, generally has a maximum down payment of $600, not $3,000. The details of contract coverage and exceptions matter; consult the regulator or qualified legal counsel before designing your actual payment policy.
Other states and types of transactions may have different rules. The amounts in this article are not a substitute for checking your trade, license, customer category and jurisdiction.
Work backward from a legal payment schedule
Suppose a contractor quotes a covered California residential project for $6,000, including custom materials and installation. An illustrative starting schedule might include a permissible $600 down payment, progress payments when clearly described work has been performed or materials have been delivered, and the final balance when the agreed work is complete.
Do not assume that merely paying a supplier counts as delivering the materials to the job or satisfying the applicable progress-payment rules. The payment milestones must match legal requirements and the actual work or material delivery. Your written contract should describe each installment in dollars and cents and identify the corresponding work or materials.
For a job outside these California rules, the legal schedule could differ. Either way, start with what you are allowed to collect and what the customer agreed to, not with an arbitrary number needed to fund your next supplier invoice.
A simple numerical illustration
For a hypothetical covered California home-improvement job of $6,000, the 10% down payment cap would be $600. The following is a math example rather than a recommended or preapproved contract schedule:
| Contract component | Illustrative amount |
|---|---|
| Approved contract total | $6,000 |
| 10% of contract value | $600 |
| Statutory comparison amount | $1,000 |
| Generally permitted down payment maximum | $600 |
| Remaining contract value after down payment | $5,400 |
Future installment amounts and timing must be calculated from the actual contract, completed work, delivered materials and applicable law—not inferred from this table. For example, a $2,400 “materials payment” just because a supplier sent a quote may not meet the rules for a progress payment.
Explain why the payment is requested
Customers are often willing to discuss a deposit when they understand its purpose. You can explain that the order is customized for their property, that the supplier requires advance commitment, and that your business must reserve time and resources. But avoid claiming that a customer is legally responsible for any arbitrary nonrefundable amount.
A useful explanation is: “This project includes a custom-manufactured component. The written agreement describes the order and our payment milestones. We will send a secure request for each payment when it is due under the contract.” That tells the customer what to expect without inventing new obligations.
Any refund or cancellation language should accurately reflect the contract, the supplier terms and applicable consumer protection law. A supplier's “noncancelable” policy does not automatically make a residential customer's deposit legally forfeitable.
What to include in the estimate and payment terms
- Identifying information for the customer, contractor and service address.
- The exact special-order item and the installation work it supports.
- The full contract price and any legally required contract notices.
- Delivery and installation timing, including what may change the dates.
- Each payment milestone, amount and triggering event.
- How any down payment is credited against the eventual invoice.
- The customer's and contractor's responsibilities for measurements and access.
- Approval procedures for changes, substitutions and price changes.
- Refund, cancellation, warranty and dispute terms consistent with applicable law.
Use a clear estimate expiration date when supplier pricing may change, and confirm the exact order before placing it. If your supplier quote expires, issue an updated proposal for acceptance instead of assuming the customer agreed to any later price.
When should the supplier order be placed?
Define an internal checklist that verifies the customer approved the exact model, specifications and material finish; the applicable contract is completed; required disclosures are provided; the legal payment milestone has been satisfied; and the supplier order is accurate. For made-to-order materials, measurement and specification errors can cost more than the financing problem you started with.
Consider who bears the risk if the supplier cannot deliver. Do not promise an installation date that depends on a vendor delivery you have not confirmed. Provide a realistic window with a process for reporting delays and obtaining approval for substitutions.
Do not confuse deposit received with money in the bank
A secure online payment can be marked successful before the processor transfers the funds to your business bank account. Your cash-flow planning should distinguish customer payment success from the payout schedule. This matters if you intend to pay a supplier immediately after receiving an advance payment.
Our guide to invoice payments and bank deposits explains the four stages: checkout, processing, settlement and payout. Always check the actual connected payment account for the payment's status and expected payout. Do not promise same-day access to funds without provider confirmation.
What if the customer changes the material after the order?
A customer might change a tile finish, cabinet specification or equipment model after accepting the estimate. Confirm which changes are still possible, obtain a supplier update and present the revised scope and price in writing. In regulated home-improvement contracting, a signed change order may be required before proceeding.
Do not quietly substitute materials because the original selection is unavailable. Even a seemingly minor substitution can affect fit, warranty, permit requirements, appearance or customer expectations. Document any additional charge and its payment timing rather than adding an unexplained fee to the final invoice.
What if the customer cancels?
Review what was agreed and what the law allows before keeping a payment. Important facts include the type of contract, statutory cancellation rights, whether work has been performed, whether materials have been delivered, and whether the supplier can cancel or return the order. The answer can be different for residential home-improvement work, a business-to-business purchase and a standard retail order.
Keep invoices, supplier correspondence, change orders and payment receipts. Communicate the reason for any proposed charge or refund; do not automatically label all deposits “nonrefundable” or keep an amount solely because the customer clicked a payment button.
How to show advance payments on the final invoice
When the job is finished and the final balance becomes due, show the full agreed charges and the amount paid earlier. If a $6,000 contract included a $600 down payment and no other payments or authorized changes, the remaining contract balance is $5,400. If the customer later paid $2,000 under valid milestones, the remaining balance is $3,400.
Keep down payments and progress payments attached to the correct job. Do not count the same advance payment as both a discount and money already received. See how to show a paid deposit on a final invoice for examples of presenting that balance to customers.
Using ProInvoice to keep the paper trail connected
A contractor can use ProInvoice to prepare a clear estimate, record customer details, include deposit terms in the supported workflow and send the customer a payment-enabled request when appropriate. The accepted scope and payment history should lead into an accurate invoice instead of being retyped from a text-message conversation.
Software can help organize records, but it does not determine whether your requested deposit is lawful. Enter amounts that comply with the contract and jurisdiction, and ensure your connected payment account is enabled for the intended checkout. Review the plan options or get started with ProInvoice.
A pre-order and pre-invoice checklist
- Confirm the customer approved the exact material and installation scope.
- Check which state laws, license rules and contract types apply.
- Verify the down payment amount does not exceed the applicable legal limit.
- Define later payment milestones based on lawful triggers.
- Check supplier lead time, measurements and cancellation terms.
- Keep the estimate, approvals, supplier documents and payment records together.
- Verify transaction success before marking an online payment received.
- Track material delivery and completed work separately from customer payment.
- Use written change orders for modifications that require them.
- Apply all lawful prior payments to the final invoice once and only once.
Frequently asked questions
Can I ask for 50% down on a custom home-improvement project?
Not automatically. In California, covered home-improvement down payments are generally limited to the lesser of $1,000 or 10% of the contract price, subject to narrow exceptions. Special-order materials do not create a general exception. Check the law governing your specific transaction.
What if the supplier demands full payment before shipping?
That supplier requirement does not automatically override customer-deposit laws. Review lawful funding and payment arrangements before accepting the job and confirm the supplier's terms.
Does ordering materials count as delivering materials?
Do not assume so. California's progress-payment restrictions are tied to work performed or materials delivered under the contract; verify exactly what qualifies under applicable law.
Should the special-order deposit appear on the final invoice?
Yes. The customer should see prior payments and the remaining balance, even if your accounting system uses a separate deposit record.
What if a custom item arrives defective?
Document the issue, contact the supplier and follow warranty, contract and consumer-law obligations. Do not charge the customer for unapproved corrective work.
Secure the order without creating a legal or customer-service problem
Special-order materials require careful planning. The safest approach starts with an accurate scope and an enforceable written agreement, then collects only payments that are actually due. Explain the material commitment, document changes, preserve receipts and show prior payments clearly on the final invoice. Good payment software can support that process; it cannot replace the rules that protect both the contractor and the customer.