SaaS financial modeling softwarefor ARR, burn and runway.

A SaaS model has to answer cash questions and growth questions in the same place: how ARR builds, what net burn is, how many months of runway remain after the hiring plan, and what a round does to ownership. A spreadsheet that tracks MRR in one tab and payroll in another will disagree the week you hire.

• Recurring revenue math with churn and expansion, not only last month's bookings.
• Cash timing for monthly invoices and annual prepay (deferred revenue).
• Headcount as a burn lever with real start dates.
• Raise-ready outputs when you need valuation and a cap table.

Replafin is driver-based: assumptions recompute the income statement, cash flow and balance sheet together. The three-statement links stay tested so deferred revenue, receivables and cash do not drift when annual plans spike collections.

ARR and related SaaS metrics sit on top of that same engine, so the board pack and the cash view are not two different truths.

Engineering and GTM hires dominate SaaS burn. Model roles with start dates and fully loaded cost so runway shortens on the month people join, not when you remembered to edit a spreadsheet total. See headcount planning and the burn rate and runway calculator for the cash framing.

• Seed and Series A SaaS founders who need one model for cash and the raise.
• Bootstrapped subscription products that care about runway and default-alive paths.
• Accountants supporting SaaS clients who want Accountant view tables with the same engine.

Not a fit if you need multi-entity corporate FP&A across a large group. See alternatives for category trade-offs.