The Best Way to Make a Budget for Your Small Business

The best way to make a business budget is to build it backward from your real bank-deposit history: pull your last 3 to 6 months of statements, calculate your average monthly revenue and your true fixed costs, then assign every remaining dollar a job before the month starts. That single move — budgeting off deposits you can prove instead of a sales forecast you hope for — is what separates a budget that holds up from one that falls apart by the second week. Everything else on this page is the operator's version of that method: how to categorize, how to build in a cash buffer, and how to decide when a short-term cash-flow gap is worth funding rather than white-knuckling.

Start With Your Deposits, Not Your Dreams

Most budgets fail because they start with a revenue target — "we'll do $80,000 this month" — instead of a revenue reality. An underwriter never budgets or approves off a target; they budget off what actually cleared the bank. You should do the same.

Open your last 3 to 6 months of business checking statements and total the real deposits for each month (strip out transfers, refunds, owner injections, and one-time items). Average them. If your deposits swing a lot month to month, budget off the lowest of the last three months, not the average — that keeps you solvent in a slow month instead of only in a good one.

This deposit figure is your budgeting ceiling. Fixed costs, variable costs, owner pay, taxes, and savings all have to fit underneath it. If they don't, the budget isn't wrong — the business has a cash-flow problem the budget just exposed, which is far better to learn on paper than at payroll.

Separate Fixed, Variable, and "Flex" Costs

The best budgets sort every dollar of spending into three buckets, because each one behaves differently when revenue moves:

• Fixed costs — rent, insurance, loan or lease payments, software subscriptions, base payroll. These hit whether you sell anything or not. Total them first; they are the number you must cover before you're allowed to breathe.
• Variable costs — cost of goods, materials, hourly labor, merchant-processing fees, shipping. These rise and fall with sales. Track them as a percentage of revenue, not a flat dollar amount, so the budget flexes automatically.
• Flex / discretionary costs — marketing, equipment upgrades, travel, extra hires. This is the bucket you throttle up in strong months and cut first in slow ones.

Knowing your fixed-cost number cold is the single most useful figure in the whole exercise. It tells you your break-even, and it's the first thing any funder looks at when they size a working-capital offer to your cash flow.

The Step-by-Step Build (What Actually Works)

Here is the sequence, in order. Doing it in this order is the point — savings and buffer come before discretionary spending, not after whatever's left.

1. Set the revenue floor. Use your provable average (or lowest recent) monthly deposits.
2. Subtract fixed costs. These are non-negotiable. What's left is your operating margin.
3. Apply variable costs as a %. If materials + labor run 40% of sales, reserve 40% of your revenue floor.
4. Carve out taxes. Move a set percentage of every deposit into a separate account the day it lands. Most small operators under-reserve here.
5. Fund the cash buffer. Aim to build 1 to 2 months of fixed costs in reserve before you expand discretionary spend.
6. Pay yourself deliberately. Owner pay is a line item, not leftovers.
7. Assign the remainder to flex. Marketing and growth get what genuinely survives the steps above.

Do this at the start of every month and reconcile against actuals at month-end. A budget is a living document; the operators who win rebuild it monthly in 20 minutes rather than setting one in January and never looking again.

A Realistic Example Monthly Budget

Below is a for-example monthly budget for a small service business with roughly $60,000 in average monthly deposits. Your percentages will differ by industry — a restaurant's variable costs dwarf a consultancy's — but the structure holds.

All figures are for example only. Notice there's no slack left — that's realistic. When a business says it has "no budget for marketing," what it usually means is that fixed and variable costs are eating everything, which is a signal to either raise prices, cut fixed costs, or bridge a specific growth investment with financing rather than starving the buffer.

Decision Framework: When a Budget Reveals a Fundable Gap

A well-built budget doesn't just control spending — it shows you exactly where and when cash runs short. Sometimes the right answer is to cut. Sometimes the gap is a timing problem, not a viability problem, and short-term working capital is the correct tool. Here's how an underwriter would tell them apart.

Working best — bridge the gap with revenue-based funding when:

• The shortfall is a timing issue — you invoice net-30/60 but payroll and materials are due now.
• You have a concrete, revenue-producing use: inventory for a confirmed order, equipment that increases capacity, a marketing push with a track record.
• Your monthly deposits are steady enough to comfortably absorb a fixed daily or weekly remittance on top of existing costs.
• Speed matters — the opportunity or obligation won't wait for a multi-week bank underwrite.

Avoid funding — fix the budget first when:

• The gap is structural: fixed costs simply exceed what deposits can support month after month. Financing a structural loss just moves the problem forward.
• You'd be borrowing to cover a shortfall with no revenue-producing use behind it.
• Your deposits are so volatile that a slow month would make a regular remittance painful.
• You haven't identified why the gap exists. Never fund a number you can't explain.

The budget is what makes this call possible. Without it, every cash crunch feels like an emergency; with it, you can see a gap coming weeks out and choose your move deliberately. See our working capital guide for how operators structure that bridge.

How Revenue-Based Funding Fits a Cash-Flow Budget

If your budget shows a fundable, revenue-producing gap, the financing that fits a cash-flow-first budget is revenue-based funding through a marketplace — because it's approved the same way you should be budgeting: on your bank deposits and revenue, not primarily on your credit score.

With a revenue-based / MCA marketplace, approval leans on your recent deposit history and revenue rather than credit alone. Typical parameters we see: funding from about $10,000 and up, FICO 500+ considered, and decisions in roughly 24 to 48 hours. Because remittance is tied to a set schedule sized to your deposits, it slots into the "fixed cost" line of your budget cleanly and predictably.

Two rules from the underwriting side. First, only fund a use that produces revenue or protects it — the remittance has to be earned back by what the money does. Second, size the funding to your deposits, not your ambition: the point of budgeting off provable cash flow is that the payment never becomes the thing that breaks the budget. No legitimate funder can promise approval, and you should treat anyone who "guarantees" it as a red flag. Compare structures in our business financing pillar before you commit.

Tools, Cadence, and Staying Honest

You don't need expensive software. A spreadsheet with the seven line items above, rebuilt monthly, beats any app you never open. What matters is cadence and honesty:

• Weekly: a 5-minute cash-position check — what's in the account, what's due before the next deposits land.
• Monthly: rebuild the budget off the latest deposits and reconcile last month's plan against actuals. Where did you overspend? Why?
• Quarterly: revisit your fixed costs and variable percentages. Costs creep; renegotiate or cut.

The discipline that makes budgeting work is the same discipline that makes you a strong funding candidate: clean books, predictable deposits, and a clear-eyed read on your own numbers. Build the budget an underwriter would trust, and you've also built the case for capital on your terms when you need it.