SaaS Budget Template

Start with the Revenue Budget sheet. Enter your current MRR as your starting point, then fill in monthly assumptions for new ARR, expansion revenue, and churn. These numbers don't need to be perfect — base them on your last 6–12 months of actuals if you have them, or use conservative estimates if you're earlier stage. The sheet calculates net MRR growth, ARR, and NRR automatically, giving you a revenue baseline that every other sheet references.

Move to the Headcount Plan next, since people are typically 60–75% of a SaaS company's total expenses. Enter each current employee by department and planned hire date, along with their salary and your benefits load percentage (typically 15–25% on top of base salary). Model out your full-year hiring plan — you'll immediately see how each hire affects monthly burn and when your cash runway starts to tighten. Then complete the Operating Expenses sheet for cloud costs, SaaS tools, marketing programs, and any other non-headcount spend.

Once all the inputs are filled in, the Monthly P&L Summary and Dashboard update automatically. Use the P&L to check whether your gross margin is tracking to the 70%+ target typical for software businesses, and whether your burn is consistent with your runway goals. Review the dashboard before every board meeting or investor update — it surfaces CAC payback, LTV:CAC, and runway in a format that investors recognize and expect. Come back each month to enter actuals alongside your budget to track variance and adjust the remaining months.

SaaS budgeting is harder than it looks because the cost structure doesn't match the revenue model. Revenue is predictable and recurring; expenses — especially headcount — are lumpy and front-loaded. You hire an engineer in January to ship a feature that generates revenue in Q3. You spend on sales and marketing this quarter to close deals that show up as ARR next quarter. Without a budget that models this timing explicitly, it's easy to run out of runway even when the business is growing.

The categories that matter most in a SaaS budget are not the same as a traditional business. Gross margin is driven by cloud infrastructure and customer success costs, not inventory. CAC payback period — how many months of subscription revenue it takes to recover the cost of acquiring a customer — is the unit economic metric that determines whether your growth is sustainable. And burn multiple (net burn divided by net new ARR) tells you how efficiently you're converting cash into recurring revenue. A good SaaS budget tracks all of these, not just revenue and expenses.

The workflow that most SaaS CFOs use is to build an annual plan in Q4, present it to the board in January, and then do a rolling re-forecast every quarter. The budget becomes the baseline; the quarterly re-forecast is where you adjust hiring timelines, shift marketing spend, or update ARR assumptions based on actual pipeline. This template is built for that workflow — the Revenue Budget sheet is easy to update when ARR assumptions change, and the Monthly P&L shows you the downstream impact on margin and runway immediately.