Time & Mat

Architecture Billing Software Built for T&M Projects

Phase-based billing, AEC expense categories, and an invoice builder -- in one offline-first app. No demo call required.

Free forever for solo work. No card required.

Built around how AEC billing actually works

Phase-based billing

Structure your project into phases -- SD, DD, CDs, CA -- and track time and expenses against each. Generate phase invoices individually or combine into a single bill.

Hourly and fixed-fee on the same project

Some phases are T&M, others are lump-sum. Track both on the same project without splitting into separate tools or spreadsheets.

Reimbursable expense tracking

Log travel, printing, consultant fees, and other reimbursables with amounts and categories. They appear automatically as line items on your invoice.

Invoice builder (no extra subscription)

Turn tracked time and expenses into a client-ready invoice in one click. Customize line items, add notes, and download as PDF. No separate accounting tool needed.

Standard AEC project phases

SD Schematic Design -- early concept work, often billed at a flat percentage of total fee.
DD Design Development -- detailed drawings and specifications, typically hourly or lump-sum.
CDs Construction Documents -- the full drawing set for permit and construction, the largest billing phase for most firms.
CA Construction Administration -- site visits, RFI responses, submittals. Usually tracked hourly through project completion.
Custom Add any phase that matches your contract: Feasibility Study, Interior Design, Permit Revisions, Post-occupancy.

Frequently asked questions

What billing phases does Time & Mat support?
You create custom phases to match your contract structure -- Schematic Design, Design Development, Construction Documents, Construction Administration, or any other breakdown. Time and expenses log to the phase, and invoices pull from the phase total.
Can I mix hourly and fixed-fee work on the same project?
Yes. Assign some phases as time-and-materials and others as lump-sum fixed-fee. Both appear on the same project and the same invoice.
Does it handle consultant pass-through expenses?
Yes. Log any expense with an amount, category, and reimbursable flag. When you generate an invoice, reimbursable expenses appear as line items automatically.

Also worth reading