Which platform is best for seed-stage startups?

Causal or Runway are the most common choices at seed stage. Causal starts around $100/month and works well for founders who think in model logic. Runway starts around $299/month with better accounting integrations for teams already using QuickBooks or Stripe. Companies burning under $30k/month can generally get by with a well-maintained Google Sheets model — the key is updating it weekly, not monthly.

How much do runway tracking platforms typically cost?

Costs range from free (Google Sheets) to enterprise pricing. Purpose-built startup tools like Runway and Causal fall in the $100–$300/month range. Mosaic starts around $20,000/year following its Lucanet acquisition. Broader FP&A platforms like Cube start around $1,500/month. Most tools require annual contracts, so the real cost is the annual commitment, not the monthly sticker price.

Do these platforms replace a CFO or fractional finance lead?

No. They replace the spreadsheet sitting between your accountant and your board. The platforms pull actuals from accounting software and let you model scenarios on top — but someone still has to decide what the assumptions mean and whether the model reflects reality. Most Series A companies use a fractional CFO alongside one of these platforms, not instead of one.

What's the difference between runway tracking and cash flow forecasting?

Runway tracking answers one question: how many months until we run out of cash at current burn? Cash flow forecasting is broader — it projects all inflows and outflows, including revenue, collections timing, and financing events. Tools like Float are built primarily for cash flow forecasting (starting around $59/month), while Runway and Causal combine both. If you only need the runway number, you don't need a full cash flow tool.

Can I track burn accurately without connecting to accounting software?

You can, but the number degrades quickly. Manual entry means the model is as accurate as the last person who updated it — which is usually not today. For companies burning over $100k/month, a two-week-old burn figure can shift decisions about hiring, spending, and fundraising timelines in ways that matter. Most teams that skip accounting integration eventually regret it when they're scrambling to reconcile actuals the night before a board meeting.

Best Platforms for Tracking Runway and Burn Rate (2026)

Most early-stage founders start with a spreadsheet. That's not wrong — Y Combinator's "default alive" framework, which Paul Graham has written about extensively, only requires knowing monthly burn and cash on hand. But as a company grows, the manual upkeep becomes the problem. Burn changes monthly. Headcount scenarios multiply. And the CFO needs a number she can defend to the board in under 30 seconds.

That's when teams start looking at dedicated tools.

What to Look for in Platforms for Tracking Runway and Burn Rate

Before comparing specific products, three things separate useful runway trackers from expensive dashboards:

Integration depth. A tool is only as accurate as its data source. The best platforms connect directly to your accounting software — QuickBooks, Xero, NetSuite — and pull actuals automatically. Without that, you're updating manually, which means you're always a week behind.

Scenario modeling. Runway isn't a single number; it's a range of outcomes based on hiring plans, revenue assumptions, and financing events. Tools that only show current burn aren't modeling — they're reporting.

Update frequency. Some platforms sync daily, some weekly, some require manual triggers. For a company burning $200k/month, a two-week-old burn figure isn't a burn figure — it's a guess.

Purpose-Built Platforms for Tracking Runway and Burn Rate

Runway

Runway (runway.com) is purpose-built for startups and has become one of the more widely adopted tools in the Series A–B range. It integrates with QuickBooks, Stripe, Brex, Ramp, and Rippling, pulling actuals into a live model that founders can actually read. Scenario planning is a core feature, not an add-on — you can model "what if we hire 3 engineers in Q3" and immediately see the runway impact.

As of April 2026, Runway's team plan starts around $299/month. For most Series A companies, that's trivial against the cost of a wrong funding timeline.

The main limitation: it's built around software company cost structures. If your model has heavy COGS, manufacturing inputs, or revenue-share deals, the default assumptions fight you.

Mosaic

Mosaic was one of the more ambitious FP&A platforms built for growth-stage companies before being acquired by Lucanet in early 2024. The acquisition hasn't degraded the product significantly, but it has shifted the go-to-market toward larger enterprises. Pricing now starts around $20,000/year for most deals, which effectively prices out pre-Series B companies.

What Mosaic does well: dashboards. The visualization layer is genuinely excellent, and the burn bridge — a waterfall chart showing what changed between periods — is one of the cleaner implementations in the category. If you need to present burn analysis to a board that processes information visually, Mosaic earns its keep.

Causal

Causal has positioned itself as a more model-centric alternative — closer to a financial modeling environment than a dashboard. You build assumptions explicitly, wire them to drivers, and the model propagates changes throughout. For founders who think in spreadsheet logic but want cleaner output, Causal fits well. Plans start around $100/month for small teams, making it one of the more accessible options earlier in the company lifecycle.

General FP&A Platforms Worth Considering

Cube

Cube's entire pitch is that it works inside your existing spreadsheets rather than replacing them. You connect Cube to Google Sheets or Excel, map your data sources, and Cube handles sync and version control. The model lives where your finance team already works.

This is either its greatest strength or its biggest weakness, depending on your situation. If you've built a solid spreadsheet model and just need it connected to live data, Cube eliminates a rip-and-replace migration. If your existing model is a mess, Cube doesn't fix it — it amplifies it. Pricing starts around $1,500/month, positioning it for companies that have outgrown manual spreadsheets but don't want to rebuild in a new tool.

Pigment

Pigment has grown significantly since its Series B in 2022 and now competes against Anaplan and Workday Adaptive for mid-market FP&A. For runway tracking specifically, it's overbuilt unless you need the collaboration features — multiple planners editing scenarios simultaneously, with approval workflows and audit trails.

Where Pigment earns consideration: companies where finance, sales ops, and HR all feed into the burn model. Headcount planning in particular is better in Pigment than in most point solutions.

Platform Comparison

Platform	Best For	Starts At	Accounting Integration	Scenario Modeling
Runway	Seed–Series B startups	~$299/mo	QuickBooks, Stripe, Ramp	Strong
Mosaic	Series B+ / growth stage	~$20k/yr	NetSuite, Sage	Strong
Causal	Early-stage, model-first founders	~$100/mo	QuickBooks, Xero	Very strong
Cube	Teams tied to Excel/Sheets	~$1,500/mo	Most major ERPs	Moderate
Pigment	Mid-market FP&A teams	Custom	NetSuite, Workday	Strong
Google Sheets	Pre-seed, budget-constrained	Free	Manual or via integrations	Manual

The Spreadsheet Case

Google Sheets deserves a serious mention, not as a consolation prize but as the right tool for a meaningful slice of companies. Pre-seed companies burning under $50k/month often don't need a $300/month platform — they need a clean model and the discipline to update it weekly.

The friction isn't building the model. It's maintaining it. Connecting live data from Stripe or QuickBooks into a sheet historically meant Apps Script nightmares or CSV exports on a good week. That gap has narrowed — tools like ModelMonkey connect Google Sheets directly to data sources, so you can ask "what's our net burn this month" and get a live answer inside the sheet you already have. For a seed-stage founder who lives in Sheets, that's often enough without the platform overhead.

For more on building the underlying model, see how to calculate runway for a startup and runway forecasting with funding integration.

When to Switch from Spreadsheets to a Dedicated Platform

Most teams hit a wall at one of 3 inflection points: when headcount exceeds 20 people and modeling individual compensation becomes tedious; when the board starts asking scenario questions that require rebuilding the whole model from scratch; or when actuals lag assumptions by more than two weeks because data entry is falling behind.

At that point, a dedicated platform typically pays for itself within one board cycle — not because it's smarter, but because it removes the person-hours spent on data plumbing.

The decision between purpose-built startup tools (Runway, Causal) versus broader FP&A platforms (Cube, Pigment, Mosaic) is essentially a question of scope. If runway tracking is the whole job, don't pay for FP&A overhead you won't use. If you're building a full operating model — revenue by segment, headcount by department, cash flow waterfall — you'll want something more structured. The startup metrics dashboard guide covers how those models connect in practice.

In summary: tool complexity should match company complexity. A $150k/year FP&A platform at seed stage isn't sophistication — it's overhead.