Guides
Cash management is a build order, not a single product
Cash management is a build order, not a product: know your pattern, forecast from commitments, size the buffer, then structure accounts around jobs.
Cash management gets sold as a product category. It is really a build order: you cannot size a buffer until you know your pattern, you cannot structure accounts until you know your buffer, and controls are pointless if nobody is reconciling. Each layer depends on the one below it, and most businesses that feel out of control on cash have skipped straight to the top layer and bought a sweep.
Work through it in order. The first two layers cost nothing but attention, and they produce most of the benefit.
What to take away
- Before forecasting anything, describe what already happened.
- Once you know the buffer, give each pot of money a job and an account. The boundary that makes this work is the subject of business checking, and where the reserve itself should sit is covered under business savings.
- Controls fail on busy days, which is exactly when they matter.
- Weeklyroll the forecast, reconcile the operating account, review anything overdue.
Layer one: know the shape of your own money
Before forecasting anything, describe what already happened. Pull at least a full cycle of history, ideally longer, and lay out receipts and payments by week rather than by month. Monthly totals hide the problem, because insolvency is a Tuesday problem, not a quarter problem.
Look for the operating cycle, the worst gap between receipts and payments, customer concentration, and the lag between invoicing and collection.
What to pull from history
- The cyclemark the recurring low point
- Worst observed gapdeepest outflow run
- Concentrationlargest single customer share
- The lagwork done to money arriving
This exercise usually reveals that the cash problem is a timing problem, not a profitability problem, and timing problems have different solutions.
Layer two: forecast forward from commitments, not from hope
Build the forward view from things you already know: contracted receipts, invoices outstanding with their observed lag applied, payroll dates, rent, loan repayments, tax dates, insurance renewals, and anything annual that only appears once and therefore gets forgotten.
Forecast disciplines that stick
- Horizon covers your longest payment cycle
- Roll the window weekly, do not rebuild
- Compare forecast to actual every roll
- Include annual itemsinsurance, licenses, tax
- Date money as available, not deposited
- Model one bad caselargest customer late
A few disciplines make the difference between a forecast that works and a spreadsheet that gets abandoned:
- Choose a horizon that covers your longest payment cycle.A rolling quarter-ahead view is a common convention, but the right horizon is the one that reaches past your slowest-paying customer and your largest periodic outgoing.
- Roll it, do not rebuild it.Advance the window on a fixed day each week and keep the same structure.
- Compare forecast to actual every time you roll.The variance is the useful output. It tells you which assumptions are wrong, and after a few cycles your forecast becomes genuinely predictive.
- Include the annual items.Insurance, licenses, professional fees, equipment renewals, and tax. These are the items that turn a comfortable month into a scramble.
- Date money as available, not as deposited.The two are different, and the federal baseline for the gap is Regulation CC, with your institution's own policy on top.
- Model one bad case.Your largest customer pays late and one significant cost arrives early. If that case is survivable, you have a real buffer.
Layer three: size the buffer from your own volatility
Resist rules of thumb. A buffer expressed as a fixed number of months of expenses ignores everything that makes your business specific: how concentrated your customers are, how lumpy your costs are, how quickly you could cut, and how much committed borrowing you could draw on.
Adjusting the buffer
Start at worst observed gap plus margin
Customer concentration? Yes -> adjust upward
Long payment lags? Yes -> adjust upward
Size it from the work you did in layer one. The floor is the depth of your worst observed gap, plus a margin for the fact that the worst case has not happened yet. Then adjust:
Size the buffer
Advantages
- Upward for customer concentration, long payment lags, seasonality, and fixed cost that cannot be reduced quickly.
Drawbacks
- Downward for a committed and available credit facility, genuinely variable costs, and a diversified customer base that pays predictably.
Write the number down and write down what it is protecting against. A buffer with a stated purpose survives the meeting where someone proposes spending it.
Layer four: structure accounts around jobs
Once you know the buffer, give each pot of money a job and an account.
An operating business checking account can handle routine receipts and payments, while separate payroll and tax accounts keep those obligations distinct. A reserve may sit in a business savings account or money market deposit account; a certificate of deposit may fit longer-dated funds only when its maturity matches the cash need. Banks may also offer zero-balance accounts, concentration accounts, and sweeps; check the account agreement for how funds move, access limits, and fees.
Four accounts, four jobs
Operating
- Job
- This month's movement
- Access
- Unrestricted
- Yield
- Not the point
- Failure mode
- Overspending
Payroll and tax
- Job
- Money already owed
- Access
- Segregated
- Yield
- Not the point
- Failure mode
- Spent by accident
Reserve
- Job
- The sized buffer
- Access
- Days not weeks
- Yield
- Yield
- Failure mode
- Funds overspend
Longer-dated
- Job
- Known future date
- Access
- Term matched
- Yield
- Yield
- Failure mode
- Mismatched date
Structure accounts around jobs
| Account | Job | What it needs |
|---|---|---|
| Operating | Everything that moves this month | Unrestricted transactions, no transfer caps |
| Payroll and tax | Money already owed to staff and to the government | Segregation, so it is never accidentally spent |
| Reserve | The buffer sized in layer three | Yield, with access measured in days not weeks |
| Longer-dated | Money with a known future date and purpose | Yield and a term that matches the date |
The payroll and tax account earns its place by removing a specific failure mode. Money collected on behalf of someone else looks like available cash in a single account, and it is not. Moving it out on collection makes the operating balance tell the truth.
Whether the reserve should chase a rate is a separate question, covered on our high-yield accounts page. The important part is that the reserve is not sitting in the operating account where it silently funds overspending.
Layer five: controls that hold when you are busy
Controls fail on busy days, which is exactly when they matter. Keep them few and enforceable.
Ask the institution about positive pay, which checks issued checks against items presented for payment, and ACH debit blocks, which can block or restrict ACH debits. Availability and setup depend on the account and institution.
Controls that hold on busy days
- Separate setting up payee from approving payment
- Second approval above a threshold, never waived
- Reconcile weekly, not when something looks wrong
- Review access quarterly for departed staff
- Turn on notifications for new payees
- Keep a second bank relationship in reserve
- Separate setting up a payee from approving a payment.If the business is too small for two people, the owner approves and someone independent reviews afterwards.
- Require a second approval above a threshold you set,and never waive it for urgency. Urgency is the most common feature of a fraudulent request.
- Reconcile on a schedule, not when something looks wrong.Weekly for the operating account is enough for most businesses.
- Review who has access quarterly.Departed staff, old integrations, and dormant cards accumulate quietly.
- Turn on notificationsfor new payees, for payments above a limit, and for balance thresholds.
- Keep one working relationship in reserve.A second account at another institution means a freeze or an outage does not stop payroll.
The payment-side detail behind these controls is covered under money transfers.
The lever most people ignore
The largest timing levers are commercial: invoice promptly, request deposits or milestone payments, follow up on overdue invoices, agree on collection terms, and negotiate supplier payment dates.
Commercial timing levers
- Invoice the day work completes
- Shorten delivery-to-invoice gap first
- Take deposits on long jobs
- Chase early and systematically
- Align supplier terms with customer terms
- Spread large annual costs across the year
Any one of these can move more cash than a rate improvement on a reserve balance.
For the wider picture around these levers, the Small Business Administration's guide to managing your finances is a reasonable free starting point.
A review rhythm that survives contact with reality
A review rhythm
- Weeklyroll the forecast, reconcile the operating account, review anything overdue.
- Monthlycompare forecast to actual, check the buffer is still at target, review the fee lines on each statement.
- Quarterlyreview access and permissions, re-test the bad case, confirm the buffer is still the right size for how the business has changed.
- Annuallyre-price the banking relationship against your current volumes, and review whether the account structure still matches the jobs.
Doing it in order
Start with what already happened, build the forward view from commitments you can name, size the buffer from your own worst gap rather than a rule of thumb, then give each pot of money an account and a job. Controls and products come last. Done in that order, cash management is mostly bookkeeping discipline, and it is the discipline rather than the product that keeps a business solvent through a bad quarter.
Common questions
How much cash should a business hold?
Enough to cover the worst gap it can reasonably expect, adjusted for how fast it could cut costs and what committed borrowing it could draw on. There is no universal figure, and any page that gives you one is guessing about your customer concentration and your cost structure.
Is a sweep arrangement worth setting up?
It is worth considering once you consistently hold a balance above what operations need and moving it manually is a chore. Before setting one up, understand exactly where the money goes when it sweeps, who holds it while it is there, and how quickly it comes back. Automation is only an improvement if the destination is one you would have chosen deliberately.
Should the reserve be at the same institution as the operating account?
Same institution is simpler and transfers are usually immediate. A different institution gives you redundancy if an account is restricted. Many businesses split the difference: the working reserve stays close, and a smaller contingency sits elsewhere with a live payment running through it.
Our forecast is always wrong. Is it worth doing?
Yes, and the wrongness is the point. Compare forecast to actual every week and the errors will show you which assumption is broken, usually the collection lag. After a few cycles the forecast becomes accurate enough to make decisions on. A forecast that is never compared to actuals stays wrong forever.
In this guide
- 5 things worth knowing about cash management requirementsCash management requirements cover account documents, underwriting, service-agreement terms, operating controls, and bank-specific rules and fees to confirm.
- Cash management calculator: the conversion cycle and the low pointThis cash management calculator page computes nothing. It teaches the conversion cycle and the weekly low point, worked on invented placeholder figures.
- Six cash management shapes, the fix for each, and the bank services that carry themSix illustrative cash problems, the fix for each, and the standard bank services (sweep, zero-balance, lockbox, ACH, positive pay) that carry those fixes, with the FDIC and NCUA insurance rules to check.
- Cash Management Mistakes on the Path of One PaymentCash management mistakes can be traced along one customer payment, from the invoice to deposit holds, reconciliation, approvals and the reserve.
- Cash management services: four tests to run before you signFour tests for any cash management service before signing: a sample export in your software, the default when nobody answers, the failure days, who approves.
