Cash flow and cost control: Tackling top financial challenges in construction
How to build smarter and keep projects profitable
with accounts payable automation
- Introduction
- Margins are tight and getting tighter
- Cash flow is unpredictable, and construction makes it worse
- Cost overruns start small and grow quickly
- Subcontractor payments are complex and high-stakes
- Construction teams need better spend visibility
- Cash flow forecasting becomes more accurate
- Compliance and audit readiness improve across every project
- Build smarter. Keep projects profitable with Medius.
Hear what's covered in this article:
In construction, cash flow is the fuel that keeps every project moving. Yet today, it is harder to maintain than ever. Rising labor costs, volatile material prices, uneven client payments, and complex subcontractor networks all put steady pressure on budgets. Combine that with thin margins and a steady stream of invoices coming in from the field, and even strong projects can feel financially strained.
Recent declines in commercial and manufacturing spending have only tightened margins further, making financial control a pressing priority.¹
You cannot control every market shift, but you can control how money moves through your organization. That is where AP automation for construction makes the difference.
When invoice processing, approvals, and payments run smoothly, construction teams get the visibility and speed they need to stay profitable, no matter the conditions.
In this blog, we break down the biggest financial challenges construction teams face today and how smarter workflows help protect cash flow and keep costs on track.
Margins are tight and getting tighter
Margins in construction have always been slim. Today, they are under even more strain.
- Skilled labor is harder to find and more expensive to retain
- Material costs fluctuate weekly
- Projects run longer due to delays and supply chain issues
- Rework and design changes add unplanned costs
Two major forces have intensified this margin pressure:
First, labor costs have continued to rise, driven by a persistent shortage of skilled craft workers and competition across data centers, energy infrastructure, and manufacturing projects.
Second, material prices have been heavily impacted by tariff volatility. Recent research shows tariffs on key building materials reached their highest effective rates in roughly 40 years, contributing to price spikes and procurement delays.1
These conditions make surprise costs and slow processes harder to absorb.
When AP is manual, pressure grows. Teams struggle with:
- Missing early payment discounts
- Duplicate billing
- Off-budget spending that goes unnoticed
- Slow processing that pushes payments late
AP automation in construction changes this. Faster routing, mobile approvals, and AI-powered validation help teams stay on top of spend before small problems become significant overruns.
Cash flow is unpredictable, and construction makes it worse
Unlike many industries, construction revenue does not arrive evenly. It comes in waves.
- Upfront mobilization
- Contract milestones
- Progress billing
- Retainage held until closeout
Meanwhile, expenses continue to mount, including subcontractor draws, materials, equipment rentals, inspections, and change orders.
This mismatch creates cash flow stress. Manual AP makes it worse because:
- Invoices get stuck waiting for approvals on-site
- Missing documentation delays payments
- Forecasts rely on outdated data
- Teams cannot identify which invoices are urgent or overdue
Automation helps smooth out the instability by:
Accelerating approvals from 3.26 days to under one day
Highlighting past-due or high-value invoices
Supporting cash flow forecast models based on committed spend
When you know what’s owed and when it’s due, you can plan smarter, manage working capital better, and avoid the stress of surprise payment spikes.
Cost overruns start small and grow quickly
Few industries experience cost creep as much as construction. Overruns often result from:
- Design changes
- Supply shortages
- Rework and punch-list items
- Scope shifts
External volatility only adds to the problem. Higher tariffs and supply chain strain have contributed to a major rise in project cancellations and budget reassessments, signaling how quickly material price swings can affect financial performance.
These conditions make surprise costs and slow processes harder to absorb. When AP is manual, pressure grows. Teams struggle with:
- Missing early payment discounts
- Duplicate billing
- Off-budget spending that goes unnoticed
- Slow processing that pushes payments late
Automated invoice processing and AI-powered matching help teams catch issues earlier by:
Flagging mismatched line items
Alerting teams to unusual charges or vendor behavior
Ensuring invoices align with updated scope
Surfacing out-of-budget costs immediately
See how top AP teams are transforming performance
Top-performing AP teams using automation have reduced non-PO invoice processing from 7+ days to just 2, while increasing PO invoice efficiency to 96.29% touchless processing and 100% touchless capture. Automation gives finance earlier visibility into costs, tighter controls, and clearer insight into financial risk.
Subcontractor payments are complex and high-stakes
Subcontractor relationships depend on trust and timely payments. Delays can stall a project, slow down crews, or strain partnerships.
But subcontractor billing is complicated.
- Multiple bid packages
- Varying scopes and cost codes
- Conditional waivers or lien releases
- Invoices tied to percent complete
- Field approval required before payment
Manual AP slows everything down.
Automated invoice routing ensures the right people, including project managers, field supervisors, and finance, review and approve each invoice without back-and-forth email or missing documentation.
Construction teams need better spend visibility
Without real-time visibility, project managers and finance teams often operate without the information they need.
- Project managers do not know what has already been committed
- Finance cannot tell which projects are trending over budget
- Leadership cannot see cash flow needs across multiple jobs
- Suppliers cannot track the status of their payments
AP automation brings clarity through:
Real-time spend tracking by project, supplier, cost code, or phase
Mobile dashboards available onsite or in the office
Alerts for exceptions, missing POs, or missing documentation
Filtered views for executives, finance, or project managers
With accurate data, teams make better decisions and proactively adjust rather than react after a cost overrun.
Cash flow forecasting becomes more accurate
Forecasting in construction is difficult because costs and revenue rarely move in sync.
AP automation strengthens forecasting accuracy by:
Providing complete and current invoice data
Highlighting committed but not yet invoiced spend
Surfacing cash flow risks early
Connecting budget, actuals, and forecast in one view
The result is a more stable working capital position and fewer surprises.
Compliance and audit readiness improve across every project
Construction projects involve many stakeholders, including owners, general contractors, subcontractors, auditors, and financial institutions. Documentation can easily become scattered across:
- Paper invoices
- Emails
- Spreadsheets
- ERP attachments
- Field notes
AP automation centralizes every audit trail:
Who approved what and when
Whether POs match the invoice and receipts
Whether suppliers are qualified and approved
Whether documentation is complete
Audit prep becomes faster and more reliable, and reduces your financial and regulatory risk.
Build smarter. Keep projects profitable with Medius.
Managing financial pressure in construction is not about removing volatility. It is about putting the right systems in place to stay ahead of it.
AP automation gives construction teams the ability to:
- Reduce invoice processing times
- Accelerate approvals
- Improve job cost accuracy
- Strengthen cash flow
- Prevent errors and duplicate invoices
- Gain real-time visibility into project spending
- Keep subcontractors paid and projects on track
Medius delivers these capabilities through AI‑powered invoice automation, mobile-friendly workflows, and real-time spend insights, all built for construction finance teams.
If you are ready to improve cash flow and tighten cost control across every job:
12026 Engineering and Construction Industry Outlook,” Deloitte Insights, November 13, 2025.