Stak gives builders complete visibility into project finances. From AI-powered invoice processing and budget tracking to polished client bills and real-time profitability reports, Stak combines automation with human oversight to keep every project on track.
Stak goes beyond basic billing. Customize invoices with your company's branding, AI-powered project reports, and a detailed budget-to-actuals report highlighting any overages.
Stak creates detailed reports that summarize project progress, highlight billed-to-date amounts, and forecast future costs. Keep your clients informed with easy-to-read visuals and a clear description of work completed.
Stak’s client bills clearly separate change orders from budgeted work, making scope updates easy to track. Each bill features a sleek, modern design with your company’s branding; ensuring a professional and polished presentation.
Stak's budget-to-actuals reports give you real-time visibility into project profitability. See spending by cost code, spot overages early, and know exactly where every project stands financially.
Stak uses AI to auto-draft and send emails in bulk. With a single click, notify clients of unpaid bills or alert vendors about expiring licenses. Each email is fully editable, keeping you in control of your communication.
Stak makes it easy to create, track, and manage change orders by keeping them separate from budgeted items on invoices and reports. This keeps you and your clients on the same page and eliminates financial surprises.
Stak was born from firsthand experience collaborating with a contractor to build a home. The founder saw the challenges of creating client bills and how managing subcontractor invoices, calculating markups and taxes, and handling change orders all got harder while juggling multiple projects.
As a client, the transparency of separated budgeted and change order costs on reports and invoices was invaluable — but it became clear how time-consuming that was to achieve with tools like QuickBooks Desktop. Stak was created to help contractors effortlessly produce these clear financial documents, streamline their workflow, and improve client communication.
The Best Builders Love the Stak Experience
880
Invoices Processed
95%
Project Match
93%
Cost Code Match
94%
Vendor Match
Customers save an average of 20 hours per week with Stak
Updated Apr 20, 2026, 12:19 AM
“Stak has been a super effective tool at streamlining our monthly invoice review and billing procedures. The platform is highly intelligent and user friendly and has become our go-to software for managing the financial side of the business, which has improved organization, communication and work flow on all of our projects.”
Colin Anderson
CCM at Hamish Anderson Custom Homes, Inc.
"Stak gives me a clean system for cost-plus billing. Budgets, job costs, and change orders stay organized, and the invoices and reports are clear for clients. It's tightened up my process and cut way down on admin time."
Ben Millar
Owner at Common Cents Remodeling LLC