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The Balance Sheet Founders Skip (And Why That's a Mistake)



Author: Yanni Papoutsi - Fractional VP of Finance and Strategy for early-stage startups - Author, Raise Ready Reading time: ~10 min

Why the Balance Sheet Exists

The balance sheet answers a single question: at this exact point in time, what does the company own, what does it owe, and what is left over for shareholders? Every other financial statement is about movement across time. The P&L shows revenue and costs over a period. The cash flow statement shows how cash moved in and out. The balance sheet is different. It is a photograph of financial position at a specific date. The fundamental equation that governs every balance sheet ever produced is: Assets = Liabilities + Equity

This equation cannot be violated. If it does not hold, there is a mistake somewhere in the model. This is what makes the balance sheet the most powerful validation tool in financial modeling. A model that balances is not automatically correct, but a model that does not balance is definitely wrong.

What Goes on a Startup Balance Sheet

Most startup balance sheets are simpler than founders expect. The complexity comes later, at growth stage, with stock-based compensation accounting, capitalized development costs, and complex debt structures. At pre-seed through Series A, the balance sheet typically has six to ten line items. Current Assets

Current assets are assets expected to be converted to cash within twelve months. Cash and cash equivalents: your actual bank balance. This number must match the ending balance in the cash flow statement exactly. If it does not, there is an error. Accounts receivable: revenue that has been recognized on the P&L but not yet collected from customers. If you have net 30 payment terms and customers pay on average in 35 days, you will carry a receivable balance. A SaaS company billing monthly with immediate payment collection will have minimal receivables. Prepaid expenses: costs you have paid in advance that have not yet been expensed. Annual software subscriptions paid upfront are a common example. You pay in January, but the expense is recognized monthly across the year. At the end of January, eleven months of that subscription sit as a prepaid on the balance sheet. Non-Current Assets

Non-current assets are held for longer than twelve months. Capitalized software development costs: if your engineers are building the core product, some of that cost can be capitalized under accounting standards rather than fully expensed in the period. This is more relevant as you scale and matters for GAAP-compliant reporting. At early stage, many startups expense all development costs. Equipment: laptops, servers, physical assets. Depreciated over their useful life. Right-of-use assets: if you have an office lease, under modern accounting standards (IFRS 16 / ASC 842), the lease creates a right-of-use asset on the balance sheet. Current Liabilities

Accounts payable: expenses that have been recognized on the P&L but not yet paid to suppliers. If you accrue for vendor invoices with 30-day terms, those balances sit here until paid. Deferred revenue: one of the most important and most frequently missed balance sheet items for startups. If a SaaS company collects an annual subscription upfront in January, only one month of that subscription has been earned by the end of January. The remaining eleven months are a liability. The company owes the customer eleven more months of service. Accrued expenses: costs incurred but not yet invoiced. Payroll accruals for the last few days of the month, for example. Short-term portion of debt: any principal due within twelve months on term loans or venture debt. Non-Current Liabilities

Long-term debt: venture debt, term loans, or other borrowings with repayment beyond twelve months. Equity

Paid-in capital: the cumulative amount invested by shareholders. Every equity round increases this number. Accumulated deficit (or retained earnings): the running total of all net income and losses since the company was founded. For venture-backed startups that are burning cash to grow, this will be a large negative number.

Why Founders Skip It and Why That Is Expensive

There are three reasons founders omit the balance sheet from their financial models. The first is that it feels redundant. "The P&L shows the costs and the cash flow statement shows the cash. What does the balance sheet add?" The answer is that it adds structural integrity. A model that includes a balance sheet that balances is a model where the three statements are correctly connected to each other. Most financial model errors manifest as a balance sheet that will not balance. The second reason is that it is harder to build. The P&L is relatively intuitive. The cash flow statement is more complex but follows a clear logic. The balance sheet requires understanding how transactions flow between statements, and that takes some time to learn. But "harder to build" is not a reason to omit a component that investors expect to see at Series A. The third reason is that errors hide in other statements and only reveal themselves in the balance sheet. A founder who skips the balance sheet can feel confident the model is correct while carrying a systematic error that would be instantly visible if the balance sheet were present. Skipping it does not remove the error. It removes the ability to detect it. What do investors actually look for when they open the balance sheet? Three things primarily. First, does it balance? An investor who opens a model and sees a balance sheet where assets do not equal liabilities plus equity will stop trusting every other number in the model. Second, what is the working capital position? Working capital is current assets minus current liabilities. A startup with negative working capital is spending cash faster than it is collecting it, even if the P&L shows a small profit. Growing businesses often have negative working capital because receivables lag payables and payroll. Understanding this dynamic and modelling it correctly matters. Third, deferred revenue. A large and growing deferred revenue balance is actually a positive signal. It means customers are paying upfront, the company is collecting cash before recognizing revenue, and cash timing is favorable relative to accounting profit. This is one of the reasons SaaS businesses with annual prepaid contracts carry negative working capital despite strong unit economics.

How to Build the Balance Sheet Step by Step

Step 1: Start with equity

The equity section should be built first because it derives directly from the other statements. Paid-in capital increases each time an equity round is raised. Accumulated deficit starts at zero and decreases by the amount of net loss each period, as pulled directly from the P&L. Step 2: Add liabilities

Accounts payable derives from the payment timing assumptions in your cost model. If suppliers are paid on 30-day terms and monthly costs are GBP 200k, you will typically carry roughly GBP 200k in accounts payable at any given time. Deferred revenue requires careful calculation. Take cumulative annual subscriptions collected in the period, subtract the portion that has been earned based on how many months of service have been delivered, and the remainder is the deferred revenue liability. Many SaaS models get this wrong by either omitting it entirely or confusing cash collected with revenue recognized. Accrued expenses accumulate through the period and are reset when paid. If you run a monthly payroll with a cutoff on the 25th, the last five days of each month generate an accrued payroll liability. Step 3: Build current assets

Cash must equal the ending balance from the cash flow statement. There is no version of the model where these two numbers should differ. Accounts receivable flows from your revenue model and payment timing. If 20% of revenue is collected 30 days after invoicing, the receivables balance at month end equals approximately 20% of that month's revenue. Step 4: Add non-current assets

For most early-stage software startups, this section is small. If you are capitalizing any development costs, the balance here grows by capitalized amounts and decreases by amortization charges. Step 5: Test the balance

Build a check cell: Assets minus (Liabilities plus Equity). This cell must equal zero. If it does not, work backward through each section until you find the mismatch. Common culprits are deferred revenue not linked to the revenue model, equity not updated for new rounds, or accumulated deficit not pulling from the P&L correctly.

The Most Common Balance Sheet Errors

Deferred revenue omitted. Extremely common in SaaS models. A company collecting GBP 1M in annual subscriptions upfront has a GBP 916k deferred revenue liability in month one. Leaving this out makes the balance sheet impossible to balance correctly and overstates how much revenue has been earned. Equity rounds not in paid-in capital. The cash from a fundraise appears in the cash flow statement under financing activities. It must also appear as an increase in paid-in capital in the equity section. Founders who update the cash flow statement but forget to update equity will see the balance sheet go out of balance by exactly the amount of the round raised. Accumulated deficit not formula-driven. If the accumulated deficit is hardcoded rather than pulling cumulatively from the P&L net income line, any future P&L change will not flow through to equity. The balance sheet becomes decorative rather than functional. Receivables not connected to revenue timing. If the model has payment terms assumptions, receivables should change as those assumptions change. A model where cash collected always equals revenue recognized, but payment terms are stated as net 30, is internally inconsistent.