What to Chase First: 5 Ways to Prioritize Your A/R Aging Report

We try to keep our Siteline webinars interactive with questions and polls. During a recent session on our 2026 State of Subcontractor Billing report, I was monitoring the chat when we asked attendees about the longest they had ever waited to get paid.

Most answers were painful but unsurprising: a couple of months, maybe a little longer. Then someone said nearly two years. Others had waited even longer.

Two years. That invoice had two birthdays. That’s wild.

Those waits may be extreme, but late payment isn’t. In our report, 84% of subcontractors said invoices go more than 30 days overdue at least half the time. When you’re staring at an A/R aging report full of unpaid invoices, though, knowing what’s late is only part of the job. You also need to decide what to chase first.

Here are five factors to help you make that call.

1. Start with what's actually past due.

Most A/R aging reports group receivables into a current bucket and progressively older past-due buckets (60, 90, 120 days, etc.). That’s helpful, but only when the aging is anchored to the right date.

What matters isn’t simply how much time has passed since you submitted the pay app. You need to know whether the invoice has passed the due date established by the contract and the payment terms for that job—and, if so, by how much.

Confirm that first, then filter to the balances that are truly past due and sort them by age. Now you have the right list—just not necessarily the final order.

2. Separate ‘late but expected’ from ‘late and unexplained.’

Two invoices can be 15 days past due and require completely different treatment. On one, the GC has confirmed that the check was approved and should arrive Friday. On the other, your last three emails have gone unanswered with no explanation for the delay.

That’s why expected payment dates are useful alongside aging data. When a GC tells you when payment is coming, record that date along with who provided it and when. If Friday comes and goes without payment, follow up again—and move the invoice back onto the active list. (And if promised payment dates keep coming and going, that history becomes useful the next time the GC gives you one.)

Keep notes with those commitments, too, so anyone working the receivable can see what the GC has already said and what follow-up has already happened. That way, your team isn’t repeating conversations or assuming someone else is handling it.

3. Consider how much cash is outstanding.

The amount outstanding matters, too. A $175,000 receivable and a $4,000 receivable in the same aging bucket represent very different amounts of working capital.

That doesn’t mean the larger invoice should automatically go first. The smaller balance may be approaching a deadline, tied to a strategic customer, or held up by an issue your team can quickly resolve. The amount is simply another factor to weigh when deciding how much attention a receivable needs and whether other people should get involved.

It also helps to look beyond individual invoices. Five smaller balances with the same GC or on the same project can add up to significant exposure. Looking at the total amount outstanding by a customer can give you a better sense of how much cash is actually tied up in one place.

4. Compare the invoice with the GC's normal payment behavior.

Contractual terms tell you when payment is due, but payment history tells you what typically happens.

Say one GC routinely pays around day 60. That doesn’t change its contractual due date, but it does help you forecast when it will arrive—and give past-due invoices context. Now, if another GC normally pays around day 35 but suddenly reaches day 55 with no explanation, that warrants a follow up. 

Just be careful about relying too heavily on a GC-wide average. Payment timing can vary by project, office, project accountant, owner funding situation, or other factors, so compare the current invoice with the most relevant payment data you have.

5. Account for approaching lien deadlines.

Lien deadlines don’t necessarily follow the same timeline as collections. Depending on the jurisdiction and project type, they may be tied to first furnishing, last furnishing, project completion, required notices, or other milestones rather than an invoice’s due date.

That means an invoice that looks less urgent on your aging report may actually need immediate attention. A smaller or newer balance, for example, could move up your list if waiting another week would put your ability to preserve your payment rights at risk.

In our industry report, 56% of subcontractors said they had missed a critical mechanic's lien deadline in the previous two years. Keep those deadlines visible alongside your collections activity and involve whoever owns lien compliance early. A GC telling you the check is being processed doesn’t stop a deadline elsewhere from lapsing.

Turn your priorities into actions.

Once you know which receivables need attention first, the next step is figuring out what’s keeping each one from getting paid. Sometimes the problem isn’t that the GC needs another reminder email at all. A missing waiver, expired compliance document, rejected pay app, incomplete backup, unresolved change order, or an outstanding approval may be what’s actually holding things up. 

So for each invoice, define:

• The blocker: What specifically is holding up payment?
• The next action: What needs to happen now?
• The owner: Does this belong with A/R, the PM, compliance, leadership, or someone else?
• The follow-up date: When should the invoice be reviewed again?
• The escalation trigger: What changes if the promise is missed or the issue remains unresolved?

An established A/R escalation plan can help your team make those calls consistently. You might set escalation points at 15, 30, and 45 days past due, or use different intervals based on contracts, customer relationships, and risk tolerance. The exact cadence can vary; what matters is deciding how the process should work before an invoice is already in trouble. Our report found that only 10% of subcontractors use a formal escalation workflow.

Bring it all together in one place.

Prioritizing A/R means pulling several pieces of information together: how late an invoice is, how much is outstanding, what the GC has told you, how that customer normally pays, what may be holding up payment, and whether any deadlines are approaching. That’s difficult when each piece lives somewhere different.

Siteline brings that information together so you can put it to work:

• Siteline's A/R Aging report shows what’s outstanding and how long it’s been sitting, with the ability to drill into the individual pay apps behind those totals. 
• The Collections workspace keeps payment status, notes, reminders, and ownership details together so your team has the context behind each receivable.
• You can record expected payment dates from GCs directly into Siteline, while Siteline calculates predicted payment dates based on project terms and payment history. 
• The Time to Payment Dashboard helps teams compare actual payment behavior across customers.
• Automated reminders keep routine follow-up moving, tasks assign next steps, and Lien Rights Management keeps approaching deadlines visible alongside it all.

Siteline doesn’t replace the judgment behind collections. It gives your team the context to use that judgment consistently—without reconstructing every invoice's history from emails, spreadsheets, and somebody's memory.

Want to see how Siteline helps subcontractors manage collections and get paid faster? Schedule a quick demo here.

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Frequently Asked Questions

How do you read an accounts receivable aging report?

Start with each invoice's contractual due date, outstanding balance, and aging bucket. Identify what’s truly past due, then add expected payment dates, payment history, notes, blockers, and relevant deadlines before deciding what to do next.

Should you always chase the oldest past-due invoices first?

No. Age is an important signal, but a newer invoice may deserve attention first if it involves more cash, unexplained silence, a broken payment commitment, a change in the GC’s normal payment behavior, or an approaching lien-rights preservation deadline.

How often should you review an A/R aging report?

Review your A/R aging report at least weekly to stay on top of past-due balances and changing payment expectations. Time-sensitive items, such as missed payment promises and approaching lien or bond claim deadlines, may need attention sooner.

Should retainage be included in an A/R aging report?

Keep retainage visible as money owed, but separate from currently collectible A/R until it is billable and due under the contract. Then age and follow it like any other receivable.

What information should a construction A/R aging report include?

At minimum, a construction A/R aging report should include the GC, project, invoice or pay app, contractual due date, outstanding amount, aging bucket, and payment status. Expected payment dates, notes, follow-up activity, ownership, and relevant lien deadlines provide additional context for prioritizing collections.