Corporate Treasury Management & Real-Time Payments3 min readUpdated September 2026

Modern Treasury vs Trovata for Civil & Structural Engineering Firms

Civil and structural engineering firms should build their treasury decision around retainage and subconsultant timing, then pick between Modern Treasury and Trovata by who owns cash visibility. Retainage, often five to ten percent of each invoice, can stay withheld until close-out, and subconsultants are often paid before clients pay.

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Step one: map retainage across your active project list

List out every single active project, its expected completion date, and the retainage percentage currently being withheld. That retainage is cash you've earned but won't collect for months, sometimes over a year past substantial completion, and it needs to sit in your forecast as a known future inflow rather than being forgotten until a client finally releases it. Most firms underestimate how much cash is tied up in retainage until they actually add it up.

Step two: identify where subconsultant payment timing creates risk

If your firm regularly brings in geotechnical, surveying, or specialty subconsultants on a project, you often have to pay them on your own separate schedule, sometimes before the matching client payment for that phase has cleared. This is structurally similar to the float problem staffing agencies face, just on a project basis instead of a payroll cycle. Flag any project where subconsultant payment obligations are running ahead of client collections, since that's where a cash crunch is most likely to originate.

Step three: decide who owns cash visibility across projects

A principal-owned firm with ten to thirty staff rarely has a dedicated platform engineer, which points toward Trovata's finance-configurable dashboard for most firms this size. A larger multi-office firm with an internal IT or platform team might reasonably consider Modern Treasury's API to build project-level cash logic tied into its project management system, but that's a real engineering investment most engineering consulting firms this size don't have spare capacity for, despite the technical fluency of the staff.

Step four: separate retainage tracking from day-to-day cash visibility

Neither platform automatically tracks retainage as a distinct category; both show bank account balances and transactions, not project-level accruals. Keep retainage tracking in your project accounting or ERP system as the source of truth, and use the treasury platform for what it actually does well, showing current cash against near-term obligations like payroll and subconsultant invoices.

Step five: pressure-test with a slow-paying municipal client

Public sector and municipal clients, common for civil engineering firms, often pay slower and more unpredictably than private developers, sometimes tied to a government budget cycle rather than your invoice terms. If a meaningful share of your revenue comes from public sector work, weight cash visibility more heavily in your decision, since payment timing risk from this client type is genuinely higher and harder to predict than from a typical private-sector client.

Step six: decide, document, and set a review point

Once you've worked through retainage exposure, subconsultant payment risk, staffing capacity, and public sector payment patterns, the decision usually points clearly toward one platform. Document the reasoning, since it will matter when a new principal or CFO joins the firm and asks why you chose the tool you did, and set a date twelve months out to confirm the decision still fits as your project mix changes.

The decision comes down to these five checks:

  1. Map retainage on every active project, including expected completion date and percentage withheld, and forecast it as a known future inflow.
  2. Identify subconsultant payments that fall due before the matching client payment clears.
  3. Decide who owns cash visibility: a finance-configurable dashboard suits firms without a platform engineer, an API suits firms with internal IT.
  4. Keep retainage tracking in project accounting or ERP software, and use the treasury platform for balances and cash movement.
  5. Weight cash visibility more heavily if public sector clients pay on budget cycles rather than your invoice terms.

A worked example: retainage across a busy project year

Say a fifteen-person firm closes out six projects in a year, each holding back seven percent retainage until final acceptance, on projects averaging a healthy fee size. Across six projects, that retainage adds up to a meaningful sum sitting outside the firm's immediate cash position at any given time, month after month, simply because new projects keep entering the pipeline as older ones finally release their holdback. A firm that hasn't totaled this up is often surprised at how much of its earned revenue is structurally delayed rather than genuinely at risk, which matters for how conservatively principals should plan distributions and hiring.

Why municipal payment cycles deserve their own line item

Beyond simple slowness, public sector clients often pay on a fixed schedule tied to a budget cycle rather than responding to your invoice date at all, which means a perfectly valid, undisputed invoice can still sit unpaid for a specific, predictable stretch that has nothing to do with your firm's performance. Track municipal receivables separately from private-sector ones in your forecast, since blending them into one single average payment timing figure tends to understate how long a typical public sector dollar actually takes to arrive in your firm's bank account.

Executive Capability Standard

What Good Looks Like

Good treasury management for an engineering consulting firm means retainage across active projects is tracked as a known future inflow, and any project where subconsultant payments are outpacing client collections is flagged before it strains payroll.

Building The Capability (5-Stage Skill Ladder)

1. Learn:List every active project with its retainage percentage, expected release date, and any subconsultant payment obligations tied to it.
2. Do Manually:Compare subconsultant payment schedules against expected client collections per project monthly, flagging any project running negative.
3. Delegate:Assign a controller or project accountant ownership of that monthly comparison instead of leaving it to individual project managers.
4. Automate:Connect operating accounts to Modern Treasury or Trovata so current cash is visible against near-term payroll and subconsultant obligations without a manual pull.
5. Buy:Arrange a line of credit sized to cover typical subconsultant funding gaps and retainage delays, reviewed annually against your actual project mix.

How to Get Started

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Frequently Asked Questions

Does either platform track retainage for us automatically?

No. Retainage is typically tracked in project accounting or ERP software as an accrual tied to specific contracts, not something a general treasury platform monitors. Use your project accounting system as the source of truth for retainage, and the treasury platform for current cash visibility.

How should we handle subconsultant payments that outpace client collections?

Track this at the project level so you can see which specific projects are creating the gap, rather than only watching your aggregate cash position. A line of credit sized for typical subconsultant funding needs is common in this industry specifically because the timing mismatch is structural, not a sign of a problem with any one project.

Is public sector work worth the payment timing risk?

That's a business strategy question outside what either treasury platform can answer. What the platforms can do is make the payment timing risk visible early, so it's a known, managed factor in your cash planning rather than a surprise each time a municipal client's payment runs late.

About the numbers

This guide doesn't quote a sourced benchmark. Figures in it are estimates or general guidance, so check them against your own numbers.

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