---
title: "B2B SaaS MRR Growth Forecaster | FoundrList Free Tools"
description: "Free mrr growth forecaster built for B2B SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report."
ai_summary: "B2B SaaS MRR Growth Forecaster: Free mrr growth forecaster built for B2B SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report. Free browser-based saas & startup finance tool on FoundrList with instant calculations, industry benchmarks, and Markdown (.md) export."
canonical_url: "https://www.foundrlist.com/tools/b2b-saas-mrr-growth-forecaster"
markdown_url: "https://www.foundrlist.com/tools/b2b-saas-mrr-growth-forecaster.md"
category: "SaaS & Startup Finance"
category_url: "https://www.foundrlist.com/tools/category/saas-finance"
engine_kind: "formula-calculator"
keywords:
  - "b2b saas mrr growth forecaster"
  - "mrr growth forecaster"
  - "b2b saas saas finance tool"
  - "free startup calculator"
---

# B2B SaaS MRR Growth Forecaster

Free mrr growth forecaster built for B2B SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.

## Formula & Methodology
`MRR Growth Forecaster: Projected ARR = Current MRR × (1 + (NewGrowth% + Expansion% - Churn%))^12 × 12`

**Default Benchmark Result (12-Month Projected ARR):** $1.21M ARR
At 12.3% net monthly compounding (12.0% new + 3.5% expansion − 3.2% churn), $25,000 MRR scales to $100,577/mo ($1.21M ARR) in 12 months.

## Default Inputs
- **B2B SaaS Current MRR ($)** (`a`, currency): Default = `25000`
- **Monthly New Logo Growth (%)** (`b`, percent): Default = `12`
- **Monthly Expansion MRR (%)** (`c`, percent): Default = `3.5`
- **Monthly Gross Logo Churn (%)** (`d`, percent): Default = `3.2`

## Sample Output Metrics
- **Current ARR Run-Rate:** $300,000
- **12-Month Ending MRR:** $100,577
- **Net New ARR Added (12m):** $906,920
- **Time to $1M ARR Milestone:** 11 months

## How to Use
1. **Enter your startup metrics or copy inputs:** Fill in the fields in the B2B SaaS MRR Growth Forecaster workspace above, or click "Load Example" to populate verified saas & startup finance benchmark data.
2. **Review real-time calculations & benchmark grades:** Inspect the primary output, supporting unit metrics, and diagnostic rules that update instantaneously in your browser with zero server round-trips.
3. **Copy the report or deploy your launch plan:** Click 'Copy Result' to export the clean Markdown output or code snippet, then launch your product on FoundrList to compound organic traffic and high-DR backlinks.

## 2026 Industry Benchmarks
- **Top-Quartile B2B SaaS LTV:CAC:** 4.0x – 6.5x — _3.0x is the standard venture & bootstrapped threshold._
- **Median CAC Payback Period:** 6 – 14 months — _PLG and self-serve products target < 6 months._
- **Healthy Net Revenue Retention (NRR):** 105% – 125% — _Expansion revenue offsets gross logo churn._

## Frequently Asked Questions

### How does the B2B SaaS MRR Growth Forecaster work?
Free mrr growth forecaster built for B2B SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report. All calculations, scoring rules, and templates run 100% client-side in your browser for instant feedback without sending private startup metrics to a server.

### What benchmarks does this saas & startup finance tool use?
The B2B SaaS MRR Growth Forecaster uses current 2026 SaaS, indie hacker, and venture benchmarks across B2B SaaS, AI products, developer tools, and bootstrapped startups so you can compare your numbers against top-quartile performers.

### Is the B2B SaaS MRR Growth Forecaster completely free to use?
Yes — every tool in the FoundrList Founder Tools suite is 100% free with no signup wall, usage cap, or watermark, and includes a clean Markdown twin (.md) for AI agents and coding assistants.

### How do I get more traffic and backlinks after using the B2B SaaS MRR Growth Forecaster?
Submit your product on FoundrList (/agent) to compete on the weekly launch leaderboard, earn a permanent high-DR dofollow backlink, or launch today for $29 (Standard Launch), book 50 Directory Submissions for $179 or 100 for $279, or grab the $278 SEO Boost Pack (/pricing) to distribute your startup everywhere.

## Related Free Tools
- [Language Learning AI App MRR Growth Forecaster](https://www.foundrlist.com/tools/language-learning-ai-app-mrr-growth-forecaster) ([.md](https://www.foundrlist.com/tools/language-learning-ai-app-mrr-growth-forecaster.md)) — Free mrr growth forecaster built for Language Learning AI App founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Video Streaming API ARR Multiple Calculator](https://www.foundrlist.com/tools/video-streaming-api-arr-multiple-calculator) ([.md](https://www.foundrlist.com/tools/video-streaming-api-arr-multiple-calculator.md)) — Free arr multiple calculator built for Video Streaming API founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Session Replay Tool LTV to CAC Ratio Calculator](https://www.foundrlist.com/tools/session-replay-tool-ltv-to-cac-ratio-calculator) ([.md](https://www.foundrlist.com/tools/session-replay-tool-ltv-to-cac-ratio-calculator.md)) — Free ltv to cac ratio calculator built for Session Replay Tool founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Smart Contract Auditor Tool CAC Payback Period Calculator](https://www.foundrlist.com/tools/smart-contract-auditor-tool-cac-payback-period-calculator) ([.md](https://www.foundrlist.com/tools/smart-contract-auditor-tool-cac-payback-period-calculator.md)) — Free cac payback period calculator built for Smart Contract Auditor Tool founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Remote Payroll SaaS Burn Rate Runway Calculator](https://www.foundrlist.com/tools/remote-payroll-saas-burn-rate-runway-calculator) ([.md](https://www.foundrlist.com/tools/remote-payroll-saas-burn-rate-runway-calculator.md)) — Free burn rate runway calculator built for Remote Payroll SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Developer Tools Runway, Burn Rate & Default Alive Calculator](https://www.foundrlist.com/tools/devtools-runway-burn-rate-calculator) ([.md](https://www.foundrlist.com/tools/devtools-runway-burn-rate-calculator.md)) — Calculate cash runway in months, net monthly burn, burn multiple, and Paul Graham 'Default Alive' status for your Developer Tools startup.
- [Creator Economy Tool MRR Growth Forecaster](https://www.foundrlist.com/tools/creator-economy-mrr-growth-forecaster) ([.md](https://www.foundrlist.com/tools/creator-economy-mrr-growth-forecaster.md)) — Free mrr growth forecaster built for Creator Economy Tool founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [FP and A Finance SaaS SaaS Quick Ratio Calculator](https://www.foundrlist.com/tools/fp-and-a-finance-saas-saas-quick-ratio-calculator) ([.md](https://www.foundrlist.com/tools/fp-and-a-finance-saas-saas-quick-ratio-calculator.md)) — Free saas quick ratio calculator built for FP and A Finance SaaS founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.
- [Staffing Agency Software Waitlist Launch Conversion Calculator](https://www.foundrlist.com/tools/staffing-agency-software-waitlist-launch-conversion-calculator) ([.md](https://www.foundrlist.com/tools/staffing-agency-software-waitlist-launch-conversion-calculator.md)) — Free waitlist launch conversion calculator built for Staffing Agency Software founders: plug in your numbers, get instant 2026 benchmarks, and export a Markdown report.

## Launch & Distribute Your Startup on FoundrList
- **Free Launch & Weekly Leaderboard:** [https://www.foundrlist.com/agent](https://www.foundrlist.com/agent)
- **Pricing ($0 Free Launch, $29 Standard Launch, $49 or $39/wk 14-Day Featured, $99 or $79/mo 30-Day Featured, $25 Newsletter, $99 Featured Blog Post, $179 50 Directories, $279 100 Directories, $278 SEO Boost Pack, $403 Boost Pro Max, Ads $49/$39/wk Home Feed, $79/$69/wk Sidebar, $99/$89/wk Both):** [https://www.foundrlist.com/pricing](https://www.foundrlist.com/pricing)