Contractor Payment Terms: What to Include in Every Contract

Why Payment Terms Matter More Than Your Price

Most contractors spend hours perfecting their pricing and almost no time on payment terms. Then they wonder why they're chasing money 90 days after the job is done.

Here's the reality: your price means nothing if you can't collect it. A $50,000 contract with vague payment language is worth less than a $40,000 contract with airtight terms — because the second one actually puts money in your account on a predictable schedule.

Think about what 83 days of waiting does to a small operation. You fronted materials. You paid your crew. Your truck payment is due. And the client "hasn't gotten to it yet." That's not a pricing problem — it's a payment terms problem.

Payment terms are the rules of the game, and if you don't write them, someone else will. General contractors, property owners, and developers all have their own standard contracts — written by their lawyers, for their benefit. Your job is to know what terms protect you and push for them before you sign.

The 9 Payment Terms Every Contract Needs

These aren't optional nice-to-haves. Each one exists because contractors have lost real money without it. If your current contract template is missing any of these, fix it before your next job.

1. Payment Schedule and Milestones

Never tie payments to calendar dates. Tie them to project milestones. Calendar-based schedules ("pay 25% on the 1st of each month") create problems when weather delays, permit hold-ups, or material shortages push the timeline. Milestone-based draws mean you get paid when work is done — regardless of what the calendar says.

A standard 4-draw schedule looks like this:

The key is defining what "complete" means for each milestone. Don't leave it open to interpretation. Write it out: "Rough-in complete means all framing inspected and approved by the building department, rough plumbing and electrical installed." The more specific you are, the fewer arguments you'll have.

2. Payment Due Dates

Once you hit a milestone, how long does the client have to pay? Industry standard ranges from Net 15 to Net 30, but there's a big difference between the two when you're running a small crew.

Net 15means payment is due within 15 days of invoicing. For most residential and small commercial work, this should be your default. If a client pushes for Net 30, that's 30 days on top of however long it took them to "review" your invoice — which in practice often means 45-60 days from milestone completion.

3. Late Payment Penalties

A contract without late payment penalties is an invitation to pay you last. The standard rate is 1.5% per month(18% annual) on overdue balances. Some states cap the interest rate you can charge, so check your state's usury laws — but most allow 1.5% monthly for commercial transactions.

The real purpose of late penalties isn't to make money on interest. It's to create urgency. When a GC is deciding which subs to pay this week, the ones with penalty clauses get paid first.

Sample language: "Invoices not paid within [15/30] days of submission shall accrue interest at a rate of 1.5% per month (18% per annum) on the unpaid balance until paid in full."

4. Deposit / Mobilization Payment

Always collect a deposit before starting work. For most projects, 10-30% of the contract valueis standard. The deposit covers material procurement, equipment mobilization, and permit costs — expenses you'll incur before any billable work is done.

When to require more than 30%: custom or specialty materials with long lead times, jobs where your material cost exceeds 50% of the contract, or first-time clients with no payment history. Some states limit how much you can collect upfront for residential work (California caps home improvement deposits at $1,000 or 10%, whichever is less), so know your local rules.

5. Change Order Pricing

Change orders are where contracts blow up. The homeowner wants to move a wall. The GC asks for "a few extras." If your contract doesn't spell out how changes are priced and approved, you'll end up eating the cost or fighting about it later.

Your contract should include:

• All changes must be in writing and signed by both parties before work begins.
• A markup rate for change order work (15-25% above cost is typical, to account for disruption and re-sequencing).
• Change orders are billed at time-and-materials if no lump sum is agreed.
• Payment for change orders is due with the next scheduled draw or within 15 days, whichever is sooner.

The goal is simple: no work without a signed change order. Period. If a client asks you to "just do it and we'll figure it out," that's a red flag. Use your estimate generator to create a formal change order document every time.

6. Retainage Terms

Retainage (also called "retention") is the percentage of each payment the client holds back until the project is complete. It's meant to guarantee you'll finish the work and fix any defects. Typical retainage is 5-10% of each progress payment.

The problem with retainage isn't the concept — it's that it often never gets released. Your contract needs to specify:

• The exact retainage percentage (push for 5% instead of 10% on residential work).
• When retainage releases — typically 30 days after substantial completion or final inspection, whichever comes first.
• That retainage reduces to 0% once your scope is 100% complete, even if the overall project continues.

On a $100,000 contract with 10% retainage, that's $10,000 sitting in someone else's account for months. For a small contractor, that's payroll. Fight for reasonable retainage terms.

7. Lien Waiver Exchange

Lien waivers and payment go hand in hand. The standard practice is:

• Conditional waiver submitted with each draw request — it only takes effect once payment clears.
• Unconditional waiver provided after payment has been received and verified in your account.

Never sign an unconditional waiver before the money is in your bank. This is one of the most common ways contractors give up their lien rights — and once you waive them, you've lost your biggest leverage for getting paid. Learn the difference in our conditional vs unconditional lien waiver guide.

8. Dispute Resolution

If something goes wrong, how do you resolve it? Without a dispute resolution clause, your only option is court — which is expensive, slow, and usually not worth it for amounts under $50,000.

A good dispute resolution clause establishes a stepped process:

• Step 1: Direct negotiation — both parties attempt to resolve the dispute within 14 days.
• Step 2: Mediation — a neutral third party helps you reach agreement. Costs are split 50/50. Mediation resolves 70-80% of construction disputes.
• Step 3: Binding arbitration or litigation — only if mediation fails.

The AIA A201 General Conditions includes a similar stepped dispute resolution process and is widely recognized across the industry.

9. Right to Stop Work

This is your emergency brake. A right-to-stop-work clause says that if payment is a certain number of days past due — typically 7-14 days — you can stop work without being in breach of contract.

Without this clause, stopping work on an unpaid project could expose you to a breach-of-contract claim. With it, you're exercising a contractual right. Sample language:

"If any payment remains unpaid for more than [7/14] days beyond the due date, Contractor may, upon 48 hours written notice to Owner, suspend all work under this Agreement without penalty until all outstanding payments, including accrued interest, are received in full."

If you only add one new clause to your contract this year, make it this one. The right to stop work changes the power dynamic entirely. You go from begging for payment to enforcing a deadline.

Payment Schedule Templates by Project Type

The right payment structure depends on the size and type of project. Here's what works for each:

Small Residential (Under $25K)

For smaller jobs — bathroom remodels, deck builds, painting projects — keep it simple. Two or three draws with a larger upfront deposit. Your material costs are a bigger percentage of the job, so you need cash in hand before buying. No retainage needed; the final payment serves that purpose.

Large Residential ($25K-$100K)

Kitchen remodels, additions, and whole-house renovations need 4-5 draws tied to clear milestones. This is where a formal estimate with itemized scope becomes essential. Push for 5% retainage max, releasing 30 days after substantial completion.

Commercial Projects ($100K+)

Monthly progress billing is standard for commercial work. You'll typically submit an application for payment (like an AIA G702/G703) with schedule-of-values breakdowns. Net 30 is harder to avoid on commercial jobs, but your late penalties and stop-work clauses matter even more.

Red Flags in Payment Terms

When a client or GC hands you a contract, read the payment section carefully. These terms should make you pause — or walk away:

Any one of these is negotiable. If a client refuses to budge on all of them, that tells you something about how the project will go.

How to Bring Up Payment Terms Without Losing the Job

A lot of contractors — especially newer ones — avoid talking about payment terms because they're afraid of losing the job. But every experienced contractor will tell you: the clients who push back hardest on fair terms are the ones who were going to stiff you anyway.

"I used to feel weird asking for a deposit. Then I got burned twice in six months. Now I open every contract conversation with payment terms. The good clients don't blink. The ones who argue — those are the ones you want to filter out."

— Remodeling contractor, 12 years in business, via contractor forum

Here's how to frame it professionally:

• Lead with industry standards."Our standard terms are Net 15 with a milestone-based draw schedule — that's typical for this type of project."
• Explain the why."The deposit covers materials we'll order specifically for your project. We don't mark up materials, so we need to cover that cost upfront."
• Make it mutual."We include lien waiver exchanges with each draw — that protects both of us."
• Put it in the estimate. Including payment terms in your initial estimate normalizes them. They're not a surprise later — they're part of your professional presentation from day one.

The bottom line: talking about payment terms isn't adversarial. It's professional. It signals that you run a real business, you've been around, and you know how this works. Good clients respect that.

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