How to Manage Accounts Receivable as a One-Person Contracting Business

You finished the deck three weeks ago. The homeowner loves it. Your lumber supplier does not love that you still have not paid them, and the electrician you subbed out is texting you again. The invoice went out the day you wrapped. It was for $14,700. The client has not opened it.

This is the part of contracting nobody warns you about. You are not just the estimator, the project manager, and the crew. You are also the entire finance department. And when payments stretch past 30, 60, 90 days, the math gets ugly fast. Aging accounts receivable can hurt any construction business's financial performance. For a one-person shop, there is no buffer. No one else is chasing payments while you frame the next job.

A system changes that. Not a complicated one. A few frameworks, a weekly habit, and a tool that runs while you work.

Vet Clients Like a Bank: The 5 Cs of Credit for Contractors

You do not need a credit department to size up a client. You need a checklist. The one banks use has five parts and it translates directly to contracting.

The 5 Cs of credit are character, capacity, capital, collateral, and conditions. Here is what each one means for you, standing in a prospective client's kitchen, deciding whether to take the job.

Character is payment history. For commercial clients, pull a Paydex score. For residential, ask the real questions. How long did their last contractor wait to get paid? Did they haggle over the final bill? A homeowner who nickel-and-dimed the last guy will nickel-and-dime you.

Capacity is whether they can actually pay. A debt-to-income ratio around 35 percent indicates a customer is managing their existing debts well. For a commercial client, you can check this. For a residential client, you are reading cues. Did they hesitate when you mentioned the deposit? Are they financing the project or paying cash?

Capital is the client's skin in the game. A homeowner who has saved for this renovation for two years is a different risk than one financing 100 percent of it on a credit card. Ask what other investments they have made in the property recently.

Collateral is your fallback. In construction, this is your lien rights. Know your state's deadlines. File prelim notices the day you sign the contract. A mechanic's lien is worth nothing if you miss the window.

Conditions is the bigger picture. Is the client's industry tightening? A restaurant owner renovating in a down market carries different risk than the same owner during a boom. Adjust your deposit requirements accordingly.

None of this takes more than fifteen minutes. What it saves you is months of chasing money that was never coming.

Three Numbers Every Solo Contractor Should Know

You do not need to pull credit reports on every client. But for larger commercial jobs, or when a client asks for extended payment terms, three numbers tell you most of what you need.

The Paydex score runs from 1 to 100. A score of 80 or above means payments typically come on or before terms. A Paydex score below 80 may signal that payments are less likely to arrive on or before terms. If you are bidding a $30,000 commercial renovation and the GC's Paydex is 62, you are probably financing their cash flow.

The FICO SBSS score ranges from 0 to 300 and is commonly used by SBA lenders. A low FICO SBSS score may signal difficulty getting traditional financing. If a client's score falls below that line, they are already struggling to get traditional financing. That should inform how much credit you extend.

Debt-to-income ratio is the simplest check. Around 35 percent is healthy. A debt-to-income ratio well above 35 percent may indicate that a large share of their income is already committed to existing debts. Your invoice competes with every other obligation they have, and it loses.

Pull these three numbers before you sign a contract over $10,000. The five minutes it takes is cheaper than 90 days of waiting.

The 10 Rule: A Simple Red-Flag System for Late Payers

Here is a rule that takes thirty seconds to apply and catches problems before they compound.

The 10 Rule states that if 10 percent or more of a customer's total outstanding invoices are overdue, the entire account should be classified as high risk.

The math is straightforward. A client owes you $50,000 across three jobs. $6,000 is past due. That is 12 percent. The account is now high risk, and you stop extending credit until the overdue balance clears. No new work, no additional materials ordered on your dime, no further exposure.

The 10 percent threshold is not arbitrary. It catches accounts before they tip into uncollectible territory. A client at 8 percent overdue might just be disorganized; at 12 percent, it could indicate a pattern.

Apply this during your weekly aging report review. Sort invoices by how long they have been outstanding. Flag any account crossing the 10 percent line. Then act: pause work if the contract allows, send a formal past-due notice, or move the account to your escalation sequence.

The rule works because it removes judgement. You are not deciding whether a client seems trustworthy. The numbers decide.

Six AR Practices That Scale Down to One Person

Construction accountants have identified six approaches that contractors can use to better manage accounts receivable. Most of them require a team. Here are the ones that work when you are the team.

Run credit checks on bigger jobs. The level of diligence should match the risk. A $2,000 deck repair does not need a credit report. A $40,000 kitchen remodel with net-30 terms does. Check payment history, debt levels, and references from other contractors.

Write payment terms that leave no room for interpretation. Each contract needs due dates, late fee language where state law allows it, and a clear statement of what happens when payment is late. Attach a one-page payment terms addendum. Email it separately so the client always has it on hand.

Design invoices that are impossible to ignore. Most contractor invoices are dense blocks of text. A good invoice has a clear description of work completed, a visible due date, multiple payment methods listed, and a link to your payment portal. If the client has to search for how to pay you, they will not.

Monitor payment patterns, not just balances. Track days between invoicing and receipt. If a client who used to pay in 14 days is now taking 35, that is a signal. Adjust their terms before the gap widens. Require a larger deposit on the next job. Start reminders earlier.

Build a written collection sequence. A five-step escalation removes the awkwardness of deciding when to follow up. Step one: friendly reminder three days before the due date. Step two: written notice the day after. Step three: phone call one week past due. Step four: formal past-due letter citing payment terms. Step five: pause work, file lien, or refer to collections.

Establish clear credit policies from onboarding through collections. The best practices are not complicated. They are consistent. Every client gets the same terms, the same invoice format, the same follow-up sequence. Consistency signals that you are serious about getting paid.

Tools That Do the Heavy Lifting

You cannot send reminders while you are on a ladder. You cannot review aging reports while you are laying tile. This is where the right tool changes the equation.

Accounts receivable management is the process of monitoring and controlling money customers owe to a business for goods or services purchased on credit. For a solo contractor, that process has to run without you. AR automation has become a strategic priority for finance leaders seeking faster cash flow, fewer manual steps, and stronger customer relationships.

The same automation that enterprise finance teams use is available to a one-person shop. Nudgepay handles the repetitive part of AR: automated payment reminders that run on your schedule, aging reports that show you exactly who is overdue and by how much, and per-customer scheduling so you can set different follow-up cadences for different clients. The reminders go out while you are on site. The reports are ready when you sit down at the end of the week. If you have been managing cash flow manually, moving to automation is the single biggest efficiency gain you can make.

What you gain is not just time. It is the consistency that a written collection policy requires. The system never forgets to send the day-three reminder. It never gets uncomfortable about the week-two phone call. It just runs.

Your AR System, Simplified

Accounts receivable directly impacts working capital efficiency and shapes business relationships. For a solo contractor, that is not abstract. Cash flow is the difference between taking the next job and turning it down because you cannot float materials. Strategic AR management drives liquidity, operational effectiveness, and customer satisfaction.

Here is the system in one place:

1. Vet every client over $10,000 using the 5 Cs. Check Paydex, FICO SBSS, and DTI for commercial work. Ask direct questions for residential.
2. Run a weekly aging report. Sort invoices into current, 1-30, 31-60, 61-90, and over 90 days. Know your total exposure.
3. Apply the 10 Rule. Any account with more than 10 percent overdue gets flagged. No new credit until it clears.
4. Follow a written five-step collection sequence. Same steps, same timing, every account.
5. Automate the reminders. Let the system send the follow-ups while you run the business.

AR does not need to be a full-time job. It needs to be a system. Build it once, run it weekly, and get back to the work that actually pays.