SYMPTOM

YOUR VENDOR INVOICES ARE STACKING UP. HERE'S WHAT THAT SIGNALS.

QUICK ANSWER

AP piling up means cash is coming in slower than obligations are going out. It's almost always a billing and collections problem rather than a revenue problem. The work is done and the GC owes you, but the cash hasn't come in yet, and your material vendors and equipment companies aren't waiting. Piling AP appears before the cash crisis does, which is what makes it worth reading every week.

Every vendor invoice you push past terms is a relationship you're degrading. Material vendors who get paid late charge more on the next order, tighten credit limits, or move you to COD. Equipment companies put holds on accounts. The compounding effect of late AP, higher material costs, reduced credit, and COD requirements, can raise your project costs by 3 to 5% permanently. That comes off the margin on every bid going forward, long after the month that caused it has closed.

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BY JOSH LUEBKERPublished 2026-08-06Updated 2026-11-01
THE DEFINITION

WHAT IT MEANS.

AP piling up is what happens when cash obligations come due faster than cash gets collected, so vendor invoices stay past terms while the work that covers them is still uncollected.

THREE REASONS AP PILES UP

WHERE THE TIMING BREAKS DOWN.

01

AR gets collected slower than AP comes due

The GC pays at net 60 and the material vendor is net 30. That 30 day difference means you're paying vendors before you're collecting from GCs, every month, on every job. It's manageable with a cash reserve and a forecast. Without both of those, AP stacks up by default rather than by accident.

02

Billing lag compresses the cycle

If pay applications go out on the 20th instead of the 1st, every payment is 30 days later than it should be. Meanwhile the AP due dates don't move at all. The mismatch pushes AP past terms every single time, and the cause looks like slow GCs rather than a billing calendar nobody owns.

03

No cash reserve to cover the difference

The $650K cash floor in the CFOS model exists for this reason, to bridge the space between spending on a project and collecting from the GC. Without a cash reserve, every project start stresses AP. Mobilization is the most predictable cash event in the business and it still catches people out.

THE MATH

WHAT IT LOOKS LIKE IN DOLLARS.

Lost early pay discounts

Most material vendors offer 2/10 Net 30, a 2% discount for payment inside 10 days. On a $400K material package that's $8K available. Paying at 45 to 60 days instead means you lose the discount and pay late fees, which is 3 to 4% of material cost given away.

Tightened credit terms

A vendor who gets paid consistently late will reduce your credit limit, require COD on new orders, or require a deposit before releasing materials. COD on a large material package demands cash before the project has billed anything, which creates the same problem you were trying to avoid.

Vendor relationship damage

The best pricing, the best allocation of scarce material, and the best service all go to customers who pay on time. A subcontractor with a reputation for slow pay gets the second best price, second priority on delivery, and less flexibility on returns and credits.

What the fix looks like in a real engagement

A verified civil client at $3.4M in revenue came to us with $245K in uncollected AR and AP stacking past terms. The collections process recovered the AR, cleared the AP, and eliminated four MCA loans inside one engagement. The money was already earned. It was held in receivables nobody was calling on.

HOW SPM FIXES IT

HOW AP GETS CLEARED AND KEPT CURRENT.

AP prioritized by relationship impact

AP gets ranked by which vendors affect upcoming projects, and those get paid first. Paying whoever calls loudest is how a sub ends up on credit hold with the one supplier the next job depends on. The ranking is written down before the week starts rather than decided on the phone with a vendor's credit manager.

Billing and collections first, because that's where the cash is

Any pending pay application goes out immediately to accelerate incoming cash, and every outstanding AR invoice gets a call with a date attached to it. The cash to pay AP is usually held in uncollected receivables rather than missing from the business. Those two moves typically free up enough cash to cover the most critical vendor obligations inside 2 to 3 weeks.

A 13 week cash forecast that maps AP against AR

The forecast puts AP due dates alongside expected AR collections, week by week, so the squeeze is visible before it forces a late payment. A supplier payment due in week 6 against a receipt expected in week 8 is a problem you can solve in week 2 with a phone call instead of week 6 with an apology.

A fixed weekly payment calendar

Once AP is current, vendors get paid on a fixed weekly schedule aligned to AR collection instead of ad hoc payments whenever cash looks available. Vendors extend credit to contractors who are predictable. Predictable turns out to be worth more than fast.

$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
PRICING

FLAT MONTHLY FEE. NO SURPRISES.

Three tiers, priced by your trailing twelve month revenue. Which one you're in depends on how much of the work you want off your desk. No hourly billing. No payroll. The one-time onboarding fee is right here in the table.

Built for subs doing $1M to $12M. Above $12.5M we quote.

Last 12 months revenueCoreStrategicPlatinumOne-time onboarding
Under $1M$1,900$3,100$3,300$2,500
$1M to $3.5M$2,600$4,100$5,300$4,500
$3.5M to $6.5M$3,800$5,900$8,300$6,000
$6.5M to $9.5M$5,100$7,600$11,800$7,500
$9.5M to $12.5M$6,100$8,900$14,900$9,000
Above $12.5MQuotedQuotedQuotedQuoted

The onboarding fee covers migrating your books back to the start of your last taxable year and getting you fully operational in 60 days. It's billed once, with your first invoice. It's the same for all three tiers, and it moves with your revenue band. Your first month is prorated, and your monthly engagement starts on the first of the first full month.

Just want the setup? Onboarding only is the same onboarding work with no monthly service after it, one time, at the onboarding fee plus $2,000. Start a monthly engagement later and $2,000 counts toward it. It starts at $4,500, and the price for every band is on the pricing page.

The three tier columns are the whole price. Which one fits depends on how much of the work you want off your desk. No payroll. No hidden line items. The onboarding fee is right here in the table.

  • Online software only: QuickBooks, Sage, Viewpoint and similar. No VPN or hosted desktop.
  • Not in any tier: payroll, pay applications, collections on receivables.
  • Pricing valid through 2027.
Core

CFO work. Your own bookkeeper keeps doing the books.

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions and never in a report.

Your bookkeeper still does the books.

Strategic

Core, plus bookkeeping and bank reconciliations, plus job costing and WIP software set up and managed for you. Use your own online accounting software or we supply it, one price.

Every job shows its margin while it is still open.

Everything in Core, plus the bookkeeping and bank reconciliations done for you, and the job costing and WIP software set up, loaded with your cost codes, and managed every month. Use your own online software, or move to ours and we cover it.

A bookkeeper we choose does the books and reconciliations. No payroll.

Platinum

Strategic, plus a controller who handles payables and receivables the way an in-house controller would. You approve every payment.

You approve, and the money side gets handled.

Everything in Strategic, plus a controller we choose who handles your bills and receivables for you the way an in-house controller would. They call vendors, pay the bills and keep the accounting current. We plan the cash flow first, and you approve every payment because it is your money.

A controller we choose does the payables and receivables. No payroll, no pay applications, no collections.

COMMON QUESTIONS

FREQUENTLY ASKED.

Piling AP means cash obligations are outrunning cash collections. It's a timing signal. Money is coming in, but not fast enough to cover what's going out. The most common cause is the distance between when subs pay vendors at net 30 and when GCs pay subs at net 60 or later, compounded by billing that goes out late and AR nobody follows up on systematically.

Vendors who get paid consistently late respond by reducing credit limits, requiring COD on new orders, charging late fees, removing early pay discount eligibility, and deprioritizing your orders during material shortages. The cumulative effect can add 3 to 5% to your material costs permanently, which reduces margin on every bid going forward.

Collect AR aggressively. Call every outstanding invoice and get a payment commitment with a date on it. The cash to pay vendors is almost always held in uncollected receivables. Then submit any pending pay applications immediately. Those two moves typically generate enough cash to cover the most critical vendor obligations within 2 to 3 weeks.

Build a 13 week cash forecast that maps AP due dates against AR collection timing, so you can see the squeeze coming before it forces late payments. Put vendors on a fixed weekly payment calendar rather than paying ad hoc when cash allows. And front load billing so cash comes in earlier on every project.

Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Strategic is where every job shows its margin while it is still open: a bookkeeper we choose does the books and the bank reconciliations, and the job costing and WIP software is set up and managed for you, on your own online software or ours. Platinum is where you approve and the money side gets handled: a controller we choose handles your bills and receivables the way an in-house controller would, and you approve every payment. No payroll. No scope gaps.
WHAT THIS TIES INTO
Josh Luebker, SPM The Construction CFO
Josh Luebker
FRACTIONAL CFO · SPM THE CONSTRUCTION CFO

Josh Luebker is a master electrician turned construction CFO, president of SPM The Construction CFO and author of CONTROL: C.F.O.S. Construction Financial Operating System.

IS AP PILING UP IN YOUR BUSINESS?

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