Construction Accounts Receivable Management Guide | Projul

Why Accounts Receivable Is the Silent Killer for Contractors

Here’s something every contractor knows but nobody likes to talk about: you can be booked solid, running three crews, and still be broke. Not because the work isn’t there. Because the money hasn’t shown up yet.

Accounts receivable, the money people owe you for work you’ve already done, is one of the biggest financial headaches in construction. And it’s not just an accounting line item. When your AR ages past 60, 90, or 120 days, it starts a chain reaction. You can’t pay your subs on time. You can’t stock materials for the next job. You start floating everything on credit, and suddenly your margins are getting eaten alive by interest.

The construction industry is notorious for slow payments. A 2024 survey by Levelset found that 80% of contractors deal with late payments on a regular basis, and the average days sales outstanding (DSO) in construction sits between 60 and 90 days. Compare that to most other industries where 30 to 45 days is the norm. We’re literally funding our clients’ projects with our own cash, and that’s backwards.

The good news? You don’t have to accept it. With the right systems, clear terms, and a willingness to actually enforce your payment policies, you can cut your collection times in half and stop wondering every month whether payroll is going to clear.

This isn’t some finance textbook. This is a field-tested playbook for getting paid what you’re owed, when you’re owed it.

Setting Up Payment Terms That Actually Protect You

The number one mistake contractors make with accounts receivable starts before they ever send an invoice. It starts with the contract.

If your payment terms are vague, buried in fine print, or copied from some template you found online five years ago, you’re setting yourself up for collection problems. Your terms need to be specific, visible, and agreed upon in writing before a single shovel hits the ground.

What Your Payment Terms Should Include

Due dates with real numbers. “Net 30” is fine for some jobs, but on bigger commercial work, you might need progress billing tied to milestones. Whatever you choose, put the actual calendar dates or trigger events in the contract. “Due upon completion” is a recipe for arguments. For a deeper dive on structuring these correctly, check out our payment terms guide.

Late payment penalties. A 1% to 1.5% monthly fee on overdue balances is industry standard. More importantly, it signals that you’re serious about getting paid on time. Some contractors feel awkward about this, like they’re being aggressive. They’re not. They’re being professional.

Retainage terms. Spell out the retainage percentage (usually 5% to 10%), when it gets released, and what conditions trigger that release. Retainage disputes are one of the biggest sources of AR aging in construction, and they’re almost always preventable with clear contract language.

Accepted payment methods. Make it easy for people to pay you. ACH, credit card, check, online portal. The fewer obstacles between your client and their checkbook, the faster you get paid.

Dispute resolution process. When a client holds payment because of a “quality concern” or a scope disagreement, you need a defined process for resolving it without the whole invoice sitting in limbo for three months. Set a timeline for disputes (10 business days to raise an issue, for example) and a clear escalation path.

The Conversation Matters

Here’s the part most contractors skip: actually talking through the payment terms with your client before signing. Don’t just hand them a contract and hope they read page seven. Walk through the payment schedule, explain the late fees, and confirm they understand when payments are due.

This five-minute conversation saves you hours of collection calls later. It also filters out the clients who were never planning to pay on time in the first place. If someone pushes back hard on reasonable payment terms during the contract phase, that tells you everything you need to know about what the next six months will look like.

Invoicing: Stop Leaving Money on the Table

You finished the work. The client’s happy. The punch list is done. So when does the invoice go out?

If your answer is “sometime next week” or “when the office gets around to it,” you’re bleeding money. Every day between completing work and sending an invoice is a day added to your collection timeline. And in construction, where payment cycles are already stretched to the limit, those extra days add up fast.

Invoice the Same Day

The goal is simple: work gets done, invoice goes out. Same day. Not “when I get back to the office.” Not “after I compile the backup documentation.” Same day.

This is where having a solid invoicing system makes all the difference. If you’re still creating invoices manually in Excel or Word, you’re building in delays that cost you real money. Modern construction invoicing tools let you generate and send invoices from the field, attach photos and documentation, and track everything in one place.

Projul is trusted by 5,000+ contractors. See their reviews to find out why.

For more on this, our guide on invoicing best practices breaks down exactly what a professional construction invoice should include and how to avoid the common mistakes that slow down payment.

Progress Billing Is Your Best Friend

On larger projects, waiting until the end to invoice is financial suicide. Progress billing lets you bill for work as it’s completed, usually tied to a schedule of values or specific milestones.

This does two things for your AR:

1. Smaller, more frequent invoices get paid faster. A $15,000 progress bill is easier for a client to approve and pay than a $150,000 final invoice that triggers a full audit of every line item.

2. It surfaces payment problems early. If a client is slow-paying your second progress bill, you know there’s an issue before you’ve got six months of unbilled work stacked up.

What Every Construction Invoice Needs

Your invoice should be impossible to misunderstand or dispute. That means:

• Project name and contract number
• Specific work completed (with dates)
• Line items matching your contract or schedule of values
• Supporting documentation (photos, inspection reports, signed change orders)
• Clear payment terms and due date
• Late fee language (referenced from the contract)
• Multiple payment options with instructions

The more complete your invoice, the fewer reasons a client has to hold it up while they “review” it for three weeks.

Tracking and Aging Your Receivables Like a Pro

Sending invoices is only half the battle. The other half is knowing exactly where every dollar stands at all times.

An AR aging report breaks down your outstanding invoices by how long they’ve been unpaid: current (0-30 days), 31-60 days, 61-90 days, and 90+ days. This isn’t just a report your accountant looks at once a quarter. It should be something you review every single week.

The Weekly AR Review

Block 30 minutes every Monday morning to look at your aging report. Here’s what you’re looking for:

Current (0-30 days). These are healthy. No action needed unless you see a pattern of a specific client always paying at day 29.

31-60 days. Yellow flag. These invoices need a follow-up call or email. Not aggressive, just a professional check-in: “Hey, wanted to make sure you received invoice #1247. Is there anything you need from us to get that processed?”

61-90 days. Red flag. Time for a direct conversation, not an email. Pick up the phone. Something is going on, whether it’s a cash flow issue on their end, a dispute they haven’t raised, or they’re just hoping you’ll forget. You need to know which one.

90+ days. This is where you’re at real risk of not getting paid at all. Every week past 90 days drops your collection probability significantly. This is where you pull out the bigger tools: formal demand letters, lien waivers (or the threat of filing a lien), and potentially involving an attorney.

Know Your Numbers

Beyond the aging report, track these metrics monthly:

Days Sales Outstanding (DSO). This tells you the average number of days it takes to collect payment. Calculate it by dividing your total AR by your total credit sales, then multiplying by the number of days in the period. If your DSO is climbing, your collection process is slipping.

AR Turnover Ratio. Net credit sales divided by average AR. A higher number means you’re collecting faster. Anything below 6 should set off alarm bells.

Collection Effectiveness Index (CEI). This measures what percentage of your total AR you actually collected during a given period. Aim for 80% or higher.

Tying your AR tracking into your job costing gives you an even clearer picture, because you can see not just what’s outstanding, but how it maps to specific projects, clients, and contract types. That data helps you make smarter decisions about which clients to work with and what terms to offer.

The Collections Playbook: From Friendly Nudge to Final Notice

Nobody gets into construction because they love making collection calls. But having a clear, consistent process for following up on overdue invoices is the difference between a healthy business and one that’s always scrambling.

Build a Collection Cadence

Don’t wing it. Map out exactly what happens at each stage of a late payment:

Day 1 (invoice sent). Confirmation email or message that the invoice has been delivered. Include all supporting docs. Make it easy to pay.

Day -3 (three days before due). A friendly reminder: “Just a heads up, invoice #1247 for $23,500 is due on March 15th.” This alone cuts late payments dramatically. Most people aren’t trying to stiff you. They’re busy and your invoice got buried.

Day +3 (three days after due). Follow-up email: “This invoice is now past due. Please remit payment at your earliest convenience.” Reattach the invoice.

Day +10. Phone call. Not an email. An actual conversation. Ask if there’s a problem. Listen. If they’re having cash flow issues, work out a payment plan. If there’s a dispute, address it directly.

Day +30. Formal demand letter. Reference the contract terms, the late fees that are now accruing, and the specific consequences of continued non-payment (lien filing, referral to collections, suspension of work).

Day +60. If you haven’t been paid and there’s no payment plan in place, it’s time to involve your attorney or a construction-specific collection agency. The longer you wait past this point, the less likely you are to collect.

Protecting Your Lien Rights

In most states, you have the right to file a mechanic’s lien against the property if you haven’t been paid for work performed. But lien rights come with strict deadlines and requirements that vary by state. Missing a filing window by even one day can kill your claim entirely.

This is why tracking your lien waivers and preliminary notices is so important. You should be managing lien rights from day one on every project, not scrambling to figure them out when a payment goes sideways at month four.

Don’t Stop Working (Usually)

Stopping work on a project because of unpaid invoices is a nuclear option. Sometimes it’s necessary, but it creates its own legal and financial risks. Before you pull crews off a job, make sure your contract gives you that right and consult with your attorney. A poorly executed work stoppage can flip the script and make you the one in breach.

Cash Flow Forecasting: See the Problem Before It Hits

The best AR management is proactive, not reactive. That means knowing what your cash position looks like not just today, but 30, 60, and 90 days from now.

Cash flow forecasting is where your AR data turns into real business intelligence. When you combine what’s coming in (your receivables) with what’s going out (payroll, materials, sub payments, equipment costs), you get a clear picture of whether you’re headed for a crunch.

What Good Forecasting Looks Like

Map your inflows by probability. Not all receivables are created equal. A progress bill to a GC who always pays on day 28 is practically cash in hand. A final invoice to a developer who’s already 45 days late on the last two bills? That’s speculative at best. Weight your forecasts accordingly.

Plan for the gaps. Every contractor hits periods where more money is going out than coming in. That’s normal in construction, especially during project ramp-ups. The key is seeing those gaps in advance so you can plan for them: line of credit draw, adjusted sub payment schedules, or shifting project start dates.

Run worst-case scenarios. What happens if your three biggest outstanding invoices all go 90+ days? Can you still make payroll? Can you still cover materials for your next project? If the answer is no, you need a contingency plan before it happens, not after.

Connect the Dots

Your AR data doesn’t exist in a vacuum. It connects to everything:

• Job costing tells you whether the project was actually profitable, even after accounting for collection delays and late payment costs. If you’re spending 15 hours chasing a $40,000 invoice on a job that already ran thin, your true margin is even worse than you thought.

• Estimating should factor in client payment history. If a repeat client consistently pays 60 days late, your estimate needs to account for that carrying cost.

• Client selection gets sharper over time. After a year of tracking AR by client, you’ll know exactly who pays on time, who needs hand-holding, and who you should probably stop working for entirely.

Building an AR System That Runs Without You

If your accounts receivable process depends on you personally remembering to send invoices, make follow-up calls, and check the aging report, it’s not a system. It’s a liability.

The goal is to build something that runs consistently whether you’re on site, on vacation, or buried in a project that’s eating all your time.

Automate What You Can

Invoice generation and delivery. When a milestone is hit or work is completed, your invoicing tool should make it dead simple to create and send that invoice immediately. No delays, no “I’ll do it Friday” pile.

Payment reminders. Automated reminders before and after due dates cut late payments by 20% to 30% across most studies. Set them up once and let them run.

Aging alerts. Get notified automatically when an invoice crosses the 30, 60, or 90-day threshold. Don’t wait for your weekly review to discover a problem that’s been festering for two weeks.

Assign Ownership

Someone on your team (even if that someone is you, on a specific day and time) needs to own the collections process. When it’s “everybody’s job,” it’s nobody’s job. Assign a person, give them the authority to make collection calls and negotiate payment plans, and hold them accountable to the metrics.

Use Your Data

After six months of consistent AR tracking, you’ll have data that’s worth real money:

• Client payment scores. Rank your clients by average days to pay. Use this when deciding whether to take on new work from them, and what terms to offer.

• Project type analysis. Do your residential clients pay faster than commercial? Do remodel jobs age differently than new construction? These patterns help you forecast more accurately and structure your business around the work that actually pays.

• Seasonal trends. Construction cash flow is seasonal in most markets. Knowing when your slow collection periods hit lets you plan ahead instead of scrambling.

Get the Right Tools in Place

Managing AR on spreadsheets works when you’re running one or two jobs. Once you’re past that, you need software that ties your invoicing, job costing, and financial reporting together in one place. That’s exactly what Projul is built to do.

When your project management, invoicing, and job costing all live in the same system, you eliminate the gaps that let money slip through the cracks. Your field team closes out work, the invoice goes out, the aging clock starts, and follow-ups happen automatically. No spreadsheets, no sticky notes, no “I thought you sent that invoice last week.”

Try a live demo and see how Projul simplifies this for your team.

Getting paid shouldn’t be the hardest part of running a construction business. With clear terms, fast invoicing, consistent follow-up, and real data backing your decisions, it doesn’t have to be. The contractors who treat AR management as a core business function, not an afterthought, are the ones who sleep better at night. And they’re the ones who are still in business five years from now.