Seed and Series A founders don't need an enterprise FP&A suite — they need a trusted forecast, board-ready views, and answers fast, without living in spreadsheets. This guide breaks down ten of the best FP&A and forecasting tools, what each does well, and who it fits.

The 10 Best FP&A & Forecasting Tools

1. Parallel (our top pick for early-stage)

What it is: Financial planning software for startups — without the spreadsheet. Connect your accounting (QuickBooks Online or Puzzle) and Parallel builds a live model from your real data, keeping your runway, burn, and metrics current automatically.

Why founders pick it: Setup takes minutes, not months. Once your accounting is connected, Parallel generates a forecast from your actuals, then lets you run what-if scenarios, track SaaS metrics on live dashboards, and produce board-ready reports from the same model — so you walk into board meetings and investor conversations with numbers you can defend.

Best for: Seed and Series A teams that want a trusted forecast and board-ready views in days, not months.

Start free (15 days, no credit card) or book a demo.

2. Runway

What it is: FP&A built to simulate decisions quickly and collaborate around flexible, driver-based models.

Strengths: Fast "what-if" workflows and a modern UI that helps non-finance leads engage in planning.

Best for: Product-led teams running frequent scenario comparisons (hiring, GTM, runway).

3. Mosaic

What it is: A strategic finance platform combining real-time analytics and planning to get teams from data to decision faster.

Strengths: Broad workflows (reporting, headcount, cash flow) under one roof, with heavy integrations.

Best for: Startups formalizing FP&A and a board-reporting cadence.

4. Causal

What it is: Spreadsheet-free modeling with live data connections (accounting, CRM) and shareable dashboards.

Strengths: Human-readable formulas, live actuals from tools like QuickBooks, Xero, and HubSpot, and easy interactive dashboards.

Best for: Builders who want flexible modeling logic without Excel maintenance.

5. Jirav

What it is: FP&A for SMBs with best-practice templates for KPIs, budgeting/forecasting, and reporting.

Strengths: Template library plus driver-based modeling for faster time-to-value than fully custom builds.

Best for: Your first FP&A system when moving beyond a basic spreadsheet.

6. LiveFlow

What it is: Real-time QuickBooks-to-Google Sheets/Excel sync that automates reporting and consolidations.

Strengths: One-click QuickBooks connections, auto-refresh, and drill-downs.

Best for: Teams that prefer to stay in Sheets but want to eliminate CSV exports and manual updates.

7. Equals

What it is: A connected spreadsheet — live data from Stripe, Salesforce, HubSpot, and SQL, plus a query builder inside the workbook.

Strengths: Spreadsheet familiarity blended with BI-style connections and joins, with strong SaaS templates (ARR, renewals, pacing).

Best for: Analytics-heavy seed/Series A teams that want SQL and spreadsheet in one place.

8. Abacum

What it is: A collaborative FP&A platform with workflows, approvals, and what-if planning.

Strengths: Good for cross-functional planning rhythms and structured processes.

Best for: Finance leads building repeatable monthly and quarterly planning cycles.

9. Pigment

What it is: AI-powered connected planning for budgeting, forecasting, and reporting, built for agility and scale.

Strengths: Enterprise-grade modeling and governance.

Best for: Companies edging toward mid-market or enterprise complexity (a heavier lift than most seed teams need).

10. Finmark (by BILL)

What it is: Startup-friendly FP&A, now part of BILL, that simplifies budgeting and forecasting with cash-flow insights.

Strengths: Fits well if your back office already runs on BILL.

Best for: Early teams standardizing budgets and cash forecasts within the BILL ecosystem.

Quick Chooser

Fastest path to a clean, trusted model: Parallel; also consider Runway if you want heavy what-ifs.
Formalizing FP&A and board reporting: Mosaic or Jirav.
Live data plus a spreadsheet workflow: Equals or LiveFlow.
Scaling to multi-function planning: Abacum or Pigment.
BILL-centric finance stack: Finmark (by BILL).

If you want runway, hiring, and fundraising decisions in one live model that stays current with your accounting, see why founders choose Parallel.

FAQs

Do I need a finance background to forecast with Parallel?

No. Parallel builds your initial model from your accounting data, so you don't need to know how to build a three-statement model. You connect your systems, answer a few questions about how your company works, and start getting answers.

How accurate are the forecasts?

Parallel builds your forecast from your real accounting data and keeps it in sync as that data changes, so your runway and metrics reflect what's actually happening — not a stale snapshot. You stay in control of the assumptions behind every scenario.

What if I need help during setup?

You can schedule time with the team to walk through onboarding and make sure your model is set up the way you want.

Is Parallel a good fit for seed and Series A companies?

Yes — it's built for exactly that stage: a live model and board-ready views without the spreadsheet upkeep or a dedicated finance hire.