How do I manage cash flow in my first year?

Cash flow is the discipline of managing that gap. It is not accounting, it requires no software beyond a spreadsheet, and it is the single most useful habit available to a business in its first year.

Why profit and cash diverge

Your profit and loss statement counts revenue when the work is done. Your bank account changes when the money arrives. Everything difficult follows from that.

Deliver a project in March and invoice on thirty day terms and March looks strong while the cash lands in April, or May if the client is slow. Meanwhile the costs of delivering that work were paid in March. A month can be profitable and cash negative simultaneously, and the profit statement will not show it.

Three other items consume cash without appearing as costs, which surprises owners reading only the profit statement. Loan principal repayments reduce your balance and are not an expense. Owner draws do the same. And inventory converts cash into goods that sit on a shelf, which the balance sheet counts as an asset while your account counts it as gone.

The practical consequence is that the profit statement answers whether the business model works, and only a cash view answers whether you can operate next month. Both matter. Only one of them is urgent.

The thirteen week view

The standard tool is a rolling thirteen week forecast, and the reason for that horizon is practical rather than arbitrary. Thirteen weeks is roughly a quarter, far enough ahead that you can act on what you see and near enough that your estimates are grounded in actual commitments rather than guesses.

Build it as a simple grid. One column per week. Start with your opening bank balance. Add every payment you expect to receive, listed individually with the week you actually expect it rather than the week it is due, because those differ and the difference is the entire point. Then subtract everything you expect to pay: suppliers, rent, software, taxes, and your own draw. The closing balance for each week becomes the opening balance for the next.

What you are looking for is the lowest point across those thirteen weeks. That trough is the number that matters, and it is the one nobody calculates. A business can have a comfortable balance today and a week in month two where it goes negative, and seeing that six weeks in advance is the difference between arranging something and having a crisis.

Update it weekly, moving the window forward one week each time. That takes about fifteen minutes once it is built and it is the highest return recurring task in a small business.

Being honest about when money arrives

The forecast is only as good as the arrival dates, and this is where most people undermine their own tool.

Use when clients actually pay rather than when the invoice is due. A customer who has paid at day forty five three times running will pay at day forty five again, and entering day thirty because that is the term produces a forecast that reassures you and is wrong. Look at your own history and use the real figure.

Be conservative with money that is not certain. Work quoted but not accepted does not belong in the forecast at all. A proposal at ninety percent likelihood is still a possibility rather than a receipt, and a forecast built on optimistic conversions is worse than no forecast, because it produces confident decisions on numbers that were never real.

Be complete on the outgoing side, which is where the omissions cluster. Quarterly tax payments, annual insurance and subscription renewals, and anything else that lands infrequently enough to be forgotten. Those are precisely the items that turn a comfortable month into a problem, because nobody was expecting them.

Shortening the gap

Most cash flow problems are timing rather than profitability, which means most of the fix is about compressing the distance between doing work and being paid for it.

Invoice immediately rather than at month end. A business that invoices weekly instead of monthly halves its average collection period without any change in customer behaviour, and it costs nothing. This is the single cheapest improvement available.

Take deposits on project work. Anything with a meaningful delivery period should have money moving before it starts, which funds the early phase and removes the worst outcome if a client disappears.

Put recurring work on automatic payment. It removes the collection question entirely, and it removes a recurring administrative task on both sides.

Make invoices trivially easy to pay. A payment link rather than bank details, correct reference numbers, and whatever specific information the client's system requires. A meaningful share of late payment is administrative friction rather than reluctance, and asking a new business client what their invoice needs to contain is faster than discovering it through a payment that never arrives.

Then chase on a schedule rather than when you notice. A reminder a few days before the due date, one on the day, one at a week overdue, and a phone call at two weeks resolves nearly all of it. Most late payment in small business is oversight, which is why the phone call should come before anything adversarial.

Managing the outgoing side

There is less room here than most owners think, and a few things genuinely help.

Negotiate terms with suppliers rather than accepting defaults. Many will offer thirty days to a business that asks and pays reliably, and every day of supplier terms is a day of financing you did not have to arrange.

Move annual subscriptions to monthly if cash is tight, accepting the higher total. Paying more overall to avoid a single large outflow is a reasonable trade when the trough is what threatens you.

Separate tax money the day it arrives. Sales tax you collected is not yours, and a portion of every payment is owed to somebody regardless of what the balance says. A separate account, funded on receipt, converts an intention into a constraint, and spending money that was always owed is among the most common ways a viable business gets into difficulty.

The number to know

If you take one thing, take runway: your current balance divided by your average monthly net burn, expressed in months.

Below three months, every decision is urgent and your negotiating position weakens in ways that cost real money. Between three and six, you can plan but not comfortably. Above six months you can make deliberate choices, including turning down work that does not fit, which is the point at which a business starts behaving like one rather than reacting.

Calculate it from your bank statements rather than your accounting software. Take the closing balance three months ago, subtract today's balance, divide by three. That is your real monthly burn, including everything you forgot about, and it is more honest than any figure built from categories.

Then recalculate whenever something structural changes: a hire, a large client arriving or leaving, a new recurring cost. Businesses that run out of cash are almost never surprised by the arithmetic. They simply were not doing it.