For environmental consulting firms
Invoice when the deliverable lands — not when you remember.
Cash gets stuck behind unsigned reports and unclosed delivery loops. Mainstay surfaces when a client signs off or opens the document, so billing does not wait on your memory.
The lag nobody puts on a timesheet
The SWPPP shipped two weeks ago. The client opened it. The invoice is still in your head — or lost in a forwarded chain waiting for 'final approval.' That gap is revenue sitting in deliverable limbo.
A trigger, not a reminder
Mainstay does not nag you to bill. It flags when delivery is complete — client opened, signed off, or acknowledged. Your team sees what's ready to invoice without reconciling email, drives, and spreadsheets.
The principal's view
Across a 10-project book, billing lag compounds. Principals and CFOs care about cash timing as much as QSDs care about deadlines. Closing the delivery loop is how both get what they need.
What is your lag costing you?
Your numbers, not ours. Three sliders.
Carrying cost assumes a 10% annual cost of capital. Mainstay fires the billing trigger the day delivery is confirmed.
Stuck between “delivered” and “invoiced” right now
$35,000
Carrying cost of that float, per year
$3,500
Lag removed per deliverable with Mainstay
14 days → same day
Common questions
When should I invoice after delivery?
Invoice when the deliverable is accepted — not when you remember at month-end. Mainstay flags when a client signs off or opens the report, so billing does not trail delivery by weeks.
Does Mainstay send invoices?
Mainstay surfaces when work is ready to bill and integrates with your existing process. It does not replace your accounting system — it removes the lag between delivery and the invoice you were going to send anyway.
What if the client opens but does not formally approve?
Opens are logged with timestamps. Many firms invoice on client access for routine deliverables; your policy stays yours. Mainstay gives you the event — you decide when to bill.
See the receipt loop on your projects.
20 minutes with Kris — your deadlines, your deliverables.
Book a demo (opens Calendly scheduling site)