Best Cash Flow Forecasting Tools with Scenario and What-If Modeling

A cashflow modelling tool for UK financial advisers with 25+ calculators and transparent pricing.

Editor's takeFE CashCalc has become the most-used cashflow modelling tool among UK advisers, holding roughly 45% market share after its acquisition by FE fundinfo. Pricing is unusually transparent for fintech at 75 GBP a month plus VAT per adviser, with a free paraplanner license included. Advisers handling highly complex actuarial cases note it offers less granular modelling than premium alternatives like Voyant, though most reviewers rate it easier to use.

AI-assisted business planning software that syncs forecasts to real accounting data via QuickBooks and Xero.

Editor's takeLivePlan pulls actual accounting data from QuickBooks Online or Xero every 24 hours, turning plans into a live dashboard. It ships with over 550 sample plans and an AI writing assistant to help beginners avoid writer's block. Only one person can edit a section at a time, and there is no free trial.

Long-range financial planning with built-in Monte Carlo simulations and a debt scheduler.

Editor's takeOracle Scenario Modeling runs Monte Carlo simulations and a debt scheduler natively, automatically rebalancing income statements, balance sheets and cash flow as assumptions change, capabilities that usually need a plugin elsewhere. Oracle was named a Leader in the 2025 Gartner Magic Quadrant for Financial Planning Software, placing highest in ability to execute. The catch is scale and cost: the Enterprise edition requires a 25-user minimum near $500 per user monthly, and reviewers describe a steep learning curve plus slowdowns on large datasets.

Corporate card and banking platform with built-in cash flow forecasting via its Pry Financials acquisition, free for Essentials.

Editor's takeBrex folds its Pry Financials acquisition into the spend platform, automating cash flow forecasts and runway tracking. It carries a $12.3 billion valuation and counts DoorDash and Airbnb among its customers. Eligibility stays strict, since sole proprietorships cannot open accounts and applicants generally need venture backing or $400k+ in monthly revenue.

Visual cash flow forecasting tool with three-way modeling and multi-entity consolidation for Xero and QuickBooks.

Editor's takeFathom turns raw accounting data into visual three-way forecasts, an official Xero partner with a 5/5 App Store rating. It handles consolidation for up to 300 entities, well beyond what most SMB tools support. It forecasts only at monthly, quarterly, or annual resolution, so short-term daily cash management still needs a different tool.

A strategic finance platform unifying ERP, CRM, and HRIS data for automated cash flow forecasting.

Editor's takeMosaic pulls data from ERP, CRM, and HRIS systems into one forecasting model, cutting the manual spreadsheet work common in FP&A. Arc AI automates variance analysis and report drafting on top of that data. Pricing runs from roughly $10,000 to over $35,000 a year depending on the module tier, out of reach for very small teams.

AI financial planning platform running natural-language what-if scenarios on an in-memory Infinix engine.

Editor's takeProphix Copilot lets finance teams type questions like what happens if revenue drops 10 percent and get a modeled answer, powered by the in-memory Infinix engine built for large datasets. It holds HITRUST r2 certification, a rare bar in FP&A software, alongside SOC 2 Type 2 and multiple ISO standards. Third-party transaction data pegs the average annual contract around $205,000, and some customers report steep percentage increases when a multi-year deal comes up for renewal.

Enterprise FP&A platform with in-memory modeling, AI anomaly detection, and 4,000+ integrations.

Editor's takeWorkday Adaptive Planning has held Gartner Leader status in FP&A for four consecutive years, a rare consistency. Its Elastic Hypercube engine handles complex modeling fast, and it connects to 350-plus source systems out of the box. Hard limits still apply though, capping cube sheets at 15,000 rows and 5GB per version.

Cash flow forecasting tool that syncs with QuickBooks and Xero to model what-if scenarios.

Editor's takeCash Flow Frog's pitch is speed. The setup claims a forecast within a minute, with no manual data entry needed once QuickBooks or Xero connects. A one-way sync means test scenarios never touch the real books. Reviewers back the trust story, rating it 4.8 out of 5 on both the Xero App Store and Capterra. The limit shows up on the entry plan, which caps at just 3 scenarios before Pro is required.

AI forecasting module in Dynamics 365 Finance that predicts cash flow and runs what-if scenarios.

Editor's takeThis module turns ledger history into forward-looking cash projections, using Azure models like ARIMA and ETS. The scenario snapshot feature lets finance teams compare optimistic and pessimistic views side by side. Smaller companies without a year of transaction history, or budget for the Premium license, will hit setup limits fast.