Financial projections that actually match your business.

Stop forcing your SaaS into a marketplace template. ModelForge builds investor-ready 5-year projections with engines designed for your specific business model. 50+ interactive assumptions. Full 3-statement financials. Excel export with real formulas.

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No credit card required. Free while in beta.

5
Business model types
50+
Interactive assumptions
10+
Scenario templates
3
Full financial statements

Try it live

Move the sliders and watch a real SaaS financial model recalculate instantly

This runs real financial logic, the same engine that powers the full app.

Generic templates don't fit

SaaS metrics shoved into a marketplace model. E-commerce revenue logic in a services template. Your projections are wrong before you start.

$3K for a model you can't change

Hire a consultant, wait 2 weeks, get a locked spreadsheet. Need to update a single assumption? That'll be another invoice.

Spreadsheets with no guardrails

Build from scratch, pray the formulas are right, and hope your churn assumption isn't 10x industry average. No one checks.

ModelForge solves all three.

How it works

1

Pick your business model

SaaS, E-commerce, Marketplace, Services, or Usage-Based. Each has its own financial engine.

2

Adjust your assumptions

50+ sliders with industry benchmarks. Real-time guardrails warn you when values are outside norms.

3

Export and present

Download Excel with real formulas, share a link, or export a branded PDF report.

Everything you need

Built for founders, consultants, and accelerator programs

5 Business Model Engines

Purpose-built financial logic for SaaS, E-commerce, Marketplace, Services, and Usage-Based models.

Interactive Playground

Move sliders, see results update in real-time. Full income statement, cash flow, and balance sheet.

Sensitivity Analysis

Tornado charts and parameter sweeps. Know which assumptions matter most to your bottom line.

Scenario Comparison

Compare up to 4 scenarios side-by-side. Built-in templates for Conservative, Base, Aggressive.

3-Statement Financials

Income Statement, Cash Flow, and Balance Sheet, all linked. Non-circular. The balance check always zeros.

Formula-Based Excel

Real spreadsheet formulas, not just pasted values. Investors can trace every number.

Five engines. One tool.

Each model type has its own financial logic, KPIs, and benchmarks

SaaS

Seats x Price/Seat

  • MRR/ARR tracking
  • Customer & seat churn
  • Expansion revenue
  • Net revenue retention (NRR)
Start building
Read the guide

E-commerce

Orders x AOV

  • Inventory on balance sheet
  • Return rate modeling
  • Fulfillment costs
  • Repeat purchases
Start building
Read the guide

Marketplace

GMV x Take Rate

  • Dual-sided waterfall
  • Supplier & buyer churn
  • Fraud/dispute costs
  • Liquidity tracking
Start building
Read the guide

Services

Hours x Rate + Retainers

  • Utilization tracking
  • Work-in-progress on balance sheet
  • Consultant salaries as COGS
  • Project renewals
Start building
Read the guide

Usage-Based

max(Usage x Price, Min Commit)

  • Prepaid credits and deferred revenue
  • Usage growth modeling
  • Price erosion
  • Net revenue retention (NRR)
Start building
Read the guide

How ModelForge compares

ModelForgeGeneric ToolsBlank-CanvasConsultants
Business-model-specific engines
Interactive real-time playground
3-statement financials (P&L, CF, BS)
Sensitivity & scenario analysis
Industry benchmark guardrails
Formula-based Excel export
Shareable view-only links
PDF investor reports
No spreadsheet skills required

What investors look for

Investors read your model to see how you think, not to see the future

A founder who can explain where every number comes from understands the business. A hockey stick with no drivers behind it does not. This is what I learned raising and evaluating early-stage rounds, and it is why each engine above uses a different revenue formula, cost structure, and set of KPIs. Use your own operating data or cite a relevant benchmark for each input; these cards are a checklist, not industry averages.

  • Bottom-up projections. Number of customers times revenue per customer, with where they come from, what they cost, how many leave each month, and what the survivors spend over time.
  • Three years monthly, not five years quarterly. At pre-seed and seed the next 18 to 24 months carry the credibility: burn trajectory, seasonality, and when milestones hit.
  • All three statements. P&L, cash flow, and a balance sheet that balances every month. You may get away without the balance sheet at pre-seed. Not at Series A.
  • Base, upside, and downside. What if growth is 50% slower, CAC doubles, or the best channel stops working? A sensitivity view that shows which assumptions matter most tells investors you stress-tested the plan.
  • Fifteen to twenty assumptions, labeled. A 150-assumption workbook for a $500K round signals more time modeling than building.

SaaS

Revenue = ending seats x price per seat

  • MRR and ARR split into new, expansion, churned
  • Net revenue retention with expansion and churn shown separately
  • Gross margin after the actual cost of delivering the product
  • LTV to CAC and CAC payback, with acquisition assumptions explained
  • Burn multiple and the runway needed to reach the next milestone

What makes it different: Logo churn and seat churn are different numbers. A customer can stay and still shrink.

Marketplace

Revenue = GMV x take rate

  • GMV, take rate, and revenue kept separate
  • Buyer to supplier ratio and liquidity (share of listings that transact)
  • Unit economics per transaction after payment processing, fraud, and support

What makes it different: Two waterfalls: buyers and suppliers grow, churn, and cost different amounts. Model long-tail suppliers separately from power sellers when their retention differs.

E-commerce

Revenue = orders x average order value

  • Repeat purchase rate by customer cohort
  • COGS as a share of revenue, based on supplier quotes
  • Return rate using your own category and order history
  • Gross margin per order after product, shipping, fulfillment, returns, and processing

What makes it different: Inventory is a balance sheet asset. Buying $50K of stock moves cash down and assets up; revenue only appears when it sells. Most templates get this wrong.

Services

Revenue = billable hours x rate, plus retainers

  • Billable utilization based on available delivery capacity
  • Revenue per consultant
  • Gross margin with delivery salaries included in COGS
  • Retainer share of revenue

What makes it different: Consultant salaries are cost of goods sold, not operating expense. Work in progress sits on the balance sheet as unbilled work.

Usage-based

Revenue = max(usage x unit price, minimum commitment)

  • Dollar-based net retention on the same cohort year over year
  • Cost to serve one unit of usage
  • Usage growth per customer

What makes it different: Prepaid credits are cash in and deferred revenue on the balance sheet until they are consumed. Investors look for the gap between cash and revenue.

Eight things that kill credibility

  1. Top-down sizing ("1% of a $10B market") instead of customers x revenue per customer
  2. Linear growth rates; real growth decelerates, so use driver-based inputs
  3. Only a P&L, so nobody can see the month cash runs out
  4. Margins above the industry median with no explanation
  5. New customers with no churn
  6. Bookings presented as revenue, especially annual contracts and prepaid credits
  7. A flat CAC that never rises as the easy channels saturate
  8. One optimistic case and no downside scenario

The model is half the raise. The SaaS and marketplace engines have their own deep dives in the SaaS model guide and the marketplace model guide.

Free while in beta

Every feature is unlocked during the beta. No credit card, no locked buttons.

Beta access

$0

Everything included

  • All 5 business model types
  • Unlimited models and custom scenarios
  • Excel, PDF, and Word exports
  • Sensitivity analysis and scenario comparison
  • Benchmark guardrails with sources
  • Share links with password protection
Start Building Free

Paid plans come after the beta. Models you build now stay yours.

Frequently asked questions

Your investors will ask for projections.
Be ready.

Build a 5-year financial model in minutes with the engine designed for your business type.

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