How General Contractors Protect Profit Margins When Interest Rates Rise

Borrowing costs are set by the Fed. How efficiently your team moves a project from bid to closeout is determined by your office. That second piece matters more than most GCs realize.

So, what’s the best way to protect your construction profit margin when interest rates rise? Cut the waste you can control, which usually means slow preconstruction decisions, disconnected project data, missed change orders, and late billing. What is a typical general contractor profit margin?

Construction runs on thin margins. According to the Construction Financial Management Association’s (CFMA) Financial Benchmarker, top-performing contractors earn roughly 12% net income before taxes, about five percentage points more than the average company.

More telling is where that gap comes from. Top-performing GCs spend nearly the same share of revenue on overhead as all construction companies, but they have an advantage:  tighter control of direct project costs.

In other words, the most profitable general contractors don’t necessarily run leaner offices. They run tighter projects.

Why higher interest rates change the math for general contractors

Most GCs feel a rate increase first in financing. Lines of credit get more expensive, equipment loans cost more, and clients take longer to commit. 

The bigger impact is quieter. When money costs more, everything that slows down a project costs more too. That includes every day a project sits in limbo, every invoice that goes out late, and every hour spent hunting for the latest drawing.

That pressure is building right now. In September 2026, the Federal Reserve raised its benchmark rate to a range of 3.75% to 4%. At the same time, the Associated General Contractors of America reports that construction input prices rose 8.9% year over year through August 2026. More than half of the GCs surveyed had projects canceled, postponed, or scaled back in the past six months.

No GC controls any of that. But every GC controls how much margin their own internal processes give away.

Where GCs lose money before construction even starts

Preconstruction is where margin is gained or lost, and it’s where manual internal processes can do the most damage.

Bidding on the wrong work. 

Chasing every opportunity burns estimator hours on jobs you were never likely to win. A disciplined go/no-go process keeps your team focused on bids that fit.

Rebuilding the estimate. 

When the estimate lives in one system and the budget in another, someone has to redo it by hand. That’s hours of duplicate work, plus a fresh chance for human error that follows the job all the way to closeout.

Slow buyout. 

Until your sub pricing is locked, every day after award is a day your margin is exposed. An organized construction buyout process protects the margin you won the job on.

When estimating, bidding, and project management share one construction management platform, an awarded job becomes a working budget without having to start over. For a deeper look at this phase, see our ultimate guide to preconstruction.

How inefficient project management drives up construction project costs

Once the job is underway, roadblocks show up everywhere.

Submittals and RFIs stuck in inboxes. 

When approvals are tracked through email, spreadsheets, or text messages, material orders stall and schedules slip. Delays in submittals are also one of the most common ways projects end up with change orders.

Undocumented change orders. 

A field change agreed to verbally, but never written up, is work you performed and may never bill. Every misplaced change order comes straight out of your profit margin.

Information trapped in the field. 

When photos and daily logs live on a superintendent’s phone, disputes take longer to resolve. Centralized photo documentation turns that information into protection.

Late or rejected pay apps.

A rejected pay app doesn’t just delay payment. At today’s rates, it costs you interest every day it sits. Get the backup right the first time with a clean construction draw schedule.

How manual processes inflate construction overhead costs

Here’s a simple way to put a number on it:

Team members × (weekly hours on manual admin work × loaded hourly rate) × 50 weeks = annual cost

For example, suppose eight project managers each spend five hours a week re-entering data, chasing approvals, and searching for documents. At a loaded rate of $65 an hour, that’s $130,000 a year in construction overhead costs. Here’s how we got there:

8 x (5 x 65) x 50 = $130,000 

Now add superintendents, project coordinators, estimators, and accounting. The total climbs fast and every dollar of it has to be covered before your projects turn a profit.

Run the numbers with your own team. The result is your business case for change — and where construction project management software can help protect your profits.

“The good news is that with the right level of visibility, projects can still be delivered profitably…the difference is between catching a problem and absorbing one.”

–Craig Tate, RedTeam CEO

5 construction cost management best practices that protect your profit margin

1. Connect precon to project execution.

Automatically carry your estimate, bid data, and sub commitments into the project, so nothing has to be rebuilt and nothing gets lost in the handoff.

2. Standardize workflows across every project.

Consistent processes for submittals, RFIs, and approvals mean fewer surprises and faster onboarding for new team members. Pair them with a bulletproof construction schedule and your team will always know what’s next.

3. Track change orders the moment they happen.

Capture potential changes in the field, route them for approval, and tie them directly to the budget and billing. This is construction cost control at its most practical level.

4. Forecast with real-time cost data.

Looking back at actual costs isn’t enough. Know where every job stands with live cost-to-complete and estimate-at-completion forecasts and an accurate WIP schedule.

5. Build closeout into day one.

Collect closeout documents throughout the project so final payment and retainage don’t wait on a last-minute scramble. Here’s how to structure closeout for faster final payments.

Don’t wait for interest rates to fall

It’s tempting to think things will get easier once borrowing costs come down. And maybe they will. The general contractors  who come out ahead won’t be waiting to find out. They’re already tightening the processes they control.

That’s where RedTeam comes in. Our construction project management software was born on the jobsite — ready to support your team from preconstruction through closeout from one connected platform. For over 20 years, RedTeam has been helping small to mid-sized general contractors simplify, automate, and standardize their work.

Unlike enterprise construction software, every RedTeam customer gets full software functionality and a dedicated implementation and customer success team. . You can’t control the market. But you can control how efficiently your team operates in it.

That’s total project control. That’s RedTeam.

See how much time and money your team can save

Find out how RedTeam helps you cut administrative overhead, capture every change, and protect your profit margin on every project.