What is cash flow forecasting?
A rolling forecast built from your ledger, updated as the month moves.
A cash flow forecast is only as current as its last data pull. Most forecasts a small business has seen are a spreadsheet somebody built during a fundraise or a bad quarter, with formulas for growth rates and a collections assumption typed in once — and then never touched again while the actual ledger keeps moving underneath it. Three months later the spreadsheet still says what it said in March, and nobody notices until the bank balance disagrees with the model by a number too large to explain. What we build instead is a forecast wired to the ledger: every close, the model pulls the actual receipts that landed, the actual payments that went out, and the actual AR and AP aging, and reconciles the prior week's projection against what really happened before projecting the next stretch forward.
The standard horizon is a rolling 13 weeks, refreshed weekly, because 13 weeks is the window where a cash problem is still solvable — a customer paying net-60 instead of net-30, a vendor pulling a discount, a payroll date landing awkwardly against a slow collections week. A monthly or quarterly forecast can show a business is fine on average and still miss the week in the middle of the quarter where the account nearly hits zero. The 13-week model is built bottom-up from named receipts (which invoices are expected, and when, based on actual customer payment history) and named payments (payroll dates, loan payments, recurring vendor bills, the quarterly estimated tax payment), not a smoothed growth curve applied to last month's total.
Why it matters
| Without a system | With CapEasy |
|---|---|
| Decisions made on last year’s numbers | A forecast that is updated from the actual close |
| Pricing set by feel | Knowing which work makes money and which does not |
| Cash surprises that were visible months earlier | Numbers you can defend in a funding conversation |
What we need from you
Foundation
- A clean, current set of books
- At least a few periods of history
- Budget or plan, if one exists
Context
- Pricing and cost structure
- Headcount plan
- Anything you are about to decide
How it runs, step by step
- Planning & forecasting
- Cash flow forecasting
- Budgeting and re-forecasting
- Scenario modelling
- Profitability
- Job, product or service profitability
- Margin analysis
- Cost optimisation review
- Financial modelling & valuation support
- Three-statement models
- Unit economics
- Valuation analysis and supporting workings
Who does what
| Your CapEasy team | Cash flow forecasting, the reconciliations and reporting behind it, and the questions list that keeps it honest. |
| Your CPA or enrolled agent | Everything that carries a licence in United States — rendered exactly as written: issue compilation, review or audit reports — those are restricted to licensed cpa firms. |
| You | One conversation with one named person, and the decisions that are genuinely yours. |
Cash flow forecasting in United States
A forecast is a planning model, not an attest engagement, under UAA §14(a)
The Uniform Accountancy Act §14(a) restricts compilation, review, and audit reports to licensed CPA firms — that restriction covers a report that expresses assurance on historical financial statements, not a forward-looking cash flow projection. A 13-week forecast is prospective financial information built from stated assumptions; it carries no attest opinion because none applies to it, and we say so on the forecast itself rather than let the format imply a level of assurance it does not carry.
Estimated tax payment dates are scheduled, not calculated
The forecast includes the federal quarterly estimated tax payment dates (typically mid-April, mid-June, mid-September, mid-January) as known cash outflows, because missing one distorts a weekly cash position as much as missing payroll. What the forecast does not do is calculate the estimated payment amount — that figure comes from the CPA's own quarterly estimate based on year-to-date income, and the forecast uses whatever number the CPA has provided, updated when the CPA revises it.
A cash-collection assumption is not a sales-tax nexus determination
When a forecast models collections from a growing base of out-of-state customers, it is projecting cash timing, not evaluating whether that revenue has created a sales tax filing obligation in those states. Nexus depends on state-specific economic thresholds and marketplace-facilitator rules that shift year to year, and that determination stays with the CPA. The forecast can flag that revenue from a new state has grown large enough to be worth a nexus check — it does not run that check itself.
A downside scenario is not a going-concern opinion
A scenario showing the cash balance would turn negative under a stress case (a delayed raise, a lost customer) is a planning exercise a founder uses to decide what to do before that happens — cut spend, accelerate collections, raise a bridge. It is not, and is never framed as, a going-concern determination, which is an audit-level judgment a CPA makes about a set of audited financial statements under AU-C 570. Flagging a runway risk early is the entire point of the forecast; declaring going-concern doubt is a different function entirely.
What your CPA or enrolled agent receives from us
- A rolling 13-week cash flow forecast, refreshed weekly, built bottom-up from named expected receipts and named scheduled payments rather than a smoothed growth curve.
- A weekly variance line comparing last week's projected cash position to what actually happened, with the delta explained in one line, not left as an unexplained gap.
- A base-case, downside-case, and upside-case view of the same forecast, with the specific assumption that changes between cases stated explicitly (a payment delay, a slower collection cycle, a signed-but-unbilled contract).
- An AR aging feed reconciled to the general ledger, used as the source for the forecast's receipt-timing assumptions rather than a separately maintained estimate.
- An AP aging feed and a scheduled-payments calendar (payroll dates, loan payments, recurring vendor terms, quarterly estimated tax dates) driving the payment side of the model.
- A written assumptions log — collection days by customer segment, payment terms by vendor category, hiring plan — kept separate from the numbers so anyone reviewing the forecast can see what it assumes, not just what it outputs.


