CASH FLOW CALCULATOR
Cash Flow Calculator
for Small Businesses
An easy tool to help you plan for your future finances.
Use this calculator to forecast your cash flow for 13 weeks.
This tool gives you a complete snapshot of your business’s cash position by helping you:
Project incoming cash
Sales, subscriptions, and paid invoices flowing into your business
Track outgoing cash
Expenses, payroll, taxes, software, and vendor payments
Spot surpluses or shortfalls early
See potential gaps or excess cash before they happen
Forecast runway and budgets
Understand how long your cash lasts and plan spending with confidence
Prepare for major obligations
Plan ahead for large expenses, quarterly taxes, and other commitments
Your results will show Net Cash Flow, calculated as:
Cash In – Cash Out = Net Cash Flow
Instantly calculate your cash flow, understand
your financial health, and plan with confidence
Get a clear view of what’s coming in, what’s going out, and whether your business is prepared for taxes, payroll, and upcoming expenses.
What you’ll receive?
Free templated download
Update your forecast each month to stay ahead of recurring expenses and shifting revenue.
Easy to follow spreadsheet
Check your cash position before hiring, expanding, or increasing payroll.
Instantly calculates your companies cashflow
Plan for quarterly taxes, busy months, and slow seasons with clearer projections.
Who this cash flow calculator can help
This tool is built for business owners who need clarity, simplicity, and fast insights:
If cash timing matters in your business — this calculator is for you.
Why cashflow matters
Even a profitable businesses fail when cash timing is off. Cash flow forecasting helps you:
- Avoid cash shortages during critical months
- Prepare for tax deadlines without stress
- Ensure payroll is always covered
- Predict whether you can afford new hires or investments
- Reduce financial anxiety and make confident decisions
Think of cash flow as the heartbeat of your business — steady, predictable, essential.
Cash flow shifts constantly — and your forecast should reflect the real rhythm of your business. Reviewing and updating your cash flow regularly helps you stay prepared, make confident decisions, and avoid costly surprises.
Monthly Visibility
Update your forecast each month to stay ahead of recurring expenses and shifting revenue.
Smarter Growth Decisions
Check your cash position before hiring, expanding, or increasing payroll.
Tax & Seasonal Preparation
Plan for quarterly taxes, busy months, and slow seasons with clearer projections.
Financial Stability & Funding
When cash feels tight—or when seeking financing—a forecast gives clarity and confidence.
Cash flow forecasting isn’t a one-time task — it’s a system that keeps
your business aligned, stable, and ready for whatever comes next.
How the cash flow
calculator works
Enter your expected income
Your forecast starts with how much cash you expect to collect this period. Enter revenue from all sources: product sales, subscriptions, client invoices, retainers, or one-time payments.
Even if your revenue is inconsistent month to month, the tool adapts — letting you model multiple scenarios.
Add your operating expenses
Next, enter the costs required to keep your business running: rent, utilities, software, marketing spend, inventory, shipping, or professional services.
These expenses often fluctuate more than revenue, so entering them carefully creates a more accurate cash flow picture.
Add payroll, contractors & taxes
Payroll is often the single largest cash outflow — and one of the easiest to underestimate. Here you’ll enter employee salaries, contractor payments, benefits, and tax obligations such as federal/state estimates or quarterly filings.
This step shows exactly how people costs affect your runway, helping you see whether adding a new hire is feasible or risky.
Choose your forecast settings
To tailor the forecast, select your preferred time period — 1 month, quarter, or year — and enter your current cash balance.
This allows you to model different scenarios quickly, such as seasonal slowdowns, planned investments, or hiring cycles. The more accurate your starting point, the more powerful the projection becomes.
Review your results and insights
Once all inputs are added, the calculator instantly generates your cash flow summary: total inflows, total outflows, net cash flow, ending balance, and estimated runway.
A visual graph helps you see the trajectory of your cash over time — whether your cash position is strengthening, stable, or trending negative.
Need help interpreting your numbers?
Acuity’s bookkeeping and tax experts can guide you.
Where cash flow impacts your business operations
Understanding your cash flow helps you make better decisions in:
Operations
Vendor payments, inventory, equipment, and recurring costs—all areas where cash timing shapes daily efficiency.
Finance & Taxes
Tax prep, quarterly estimates, and compliance depend on maintaining a predictable cash position.
Payroll Management
Smooth payroll, stable hiring plans, and team support all rely on knowing upcoming cash availability.
Sales & Marketing
Budgeting, return-on-spend analysis, and campaign timing require visibility into cash inflows and outflows.
Cash flow touches every corner of your business—shaping decisions, reducing risk, and helping you operate with confidence at every stage of growth.
These definitions help you understand exactly how the calculator interprets your entries.
Cash Inflows
Money entering your business (sales, subscriptions, payments received).
Cash Outflows
Money leaving your business (expenses, payroll, taxes).
Net Cash Flow
Cash In – Cash Out.
Cash Flow Projection
An estimate of future cash activity over a period of time.
Operating Cash Flow
The money generated from core business operations.
Calculate your cash flow in just 5 minutes
Our CFO services FAQs
What is a CFO, and how do I know if I need one?
A CFO (Chief Financial Officer) provides high-level financial oversight and strategic guidance. If you’re raising capital, managing complex budgets, planning to exit, or just need deeper insights to support decision-making, it’s time to consider hiring a CFO. Plus, our fractional model gives you the expertise without the cost of a full-time hire.
What kind of specific CFO services does Acuity offer, and what do these services include?
Our CFO services include financial forecasting, budgeting, cash flow strategy, board and investor reporting, fundraising support, KPI development, scenario modeling, strategic planning, and more. We tailor our solutions to your company’s goals and stage of growth.
How does this CFO service compare and contrast to having an in-house CFO?
With Acuity, you get experienced CFO leadership without the overhead of hiring full-time. CFOs are a costly in-house hire. Our CFOs are embedded in your business and available for regular strategy and reporting – just like in-house – while staying flexible and cost-effective as your needs grow and change.
What is the process for acquiring a CFO from Acuity? (From inquiry to onboarding and ongoing collaboration)
Start with a free consultation to assess your needs. If CFO services are a fit, we’ll pair you with the right expert from our team. (If a lower tier of services are a better fit, we’ll make our recommendations for alternative, more cost-effective solutions.) After working with your dedicated onboarding specialist, your dedicated CFO will provide recurring strategy sessions, reporting, and ongoing support.
How often will I interact with my CFO, and what communication channels would be used?
Your CFO is available for scheduled strategy calls, and ad-hoc support via email, Slack, Teams, or Loom. You’ll receive regular dashboards, reports, and updates tailored to your ideal cadence.
What stage of business or growth would be best suited for Acuity’s CFO services?
Our CFO services are best for businesses looking for financial strategy, modeling, and investor relations. If you’re preparing for scale, funding, or expansion, this is the right level of support.
How does Acuity work with my pre-existing accounting team and software?
We collaborate closely with your internal or external bookkeepers and controllers, as well as your C-suite, board members, and investors. We integrate with your current tech stack and build processes that keep your finance function cohesive and efficient.
What steps does Acuity take to ensure safety of my data as well as confidentiality?
We use secure, cloud-based systems with bank-grade encryption, two-factor authentication, and limited-access protocols. Confidentiality is core to our process, and NDAs or access controls are implemented as needed to protect sensitive financial information.
Is there a typical commitment period minimum for CFO services, and if so what would it be?
Our structure is a pay-as-you-go, no-contract solution. Why? Well, there are no “typical” businesses out there. Each one is unique and brings unique goals, challenges, and successes. Our CFO services are available for one-off project work as well as quarterly, monthly, or weekly engagement as you grow and scale your business. We’re flexible and adjust based on your evolving needs.
Do these CFOs also assist with growth initiatives like market expansion and possible mergers & acquisitions?
Yes. Our CFOs support growth initiatives like go-to-market planning, expansion modeling, M&A strategy, pitch deck review, investor relations, due diligence, and integration support. Each of our CFOs bring over 25 years of operational and financial expertise to help navigate key milestones and capital events.
Get expert help improving your cash flow
The calculator gives you clarity — Acuity helps you turn clarity into confident financial decisions.