Guide to building a balance sheet

TL;DR

• A balance sheet captures what your business owns (assets), owes (liabilities), and holds in owner equity (common stock, retained earnings, paid-in capital) at a single point in time.
• The balance sheet reveals liquidity, solvency, and financial trends. It also signals readiness for investors or lenders evaluating risk and creditworthiness.
• Balance sheet preparation requires gathering source records (bank statements, receivables, inventory, payroll, depreciation schedules, and a trial balance), then correctly categorizing items as current or non-current.
• On the balance sheet, total assets must equal total liabilities plus equity. Mismatches usually come from misclassified transactions, timing errors, omitted accounts, or incorrect depreciation and valuation.
• Monthly bank reconciliation, consistent accounting methods, and tools like QuickBooks or Xero improve accuracy and reduce manual errors.

A balance sheet is one of the most important financial statements for any business, offering a snapshot of a company’s financial position at a specific point in time. It provides a clear overview of what a company owns, what it owes, and the equity held by its owners.

For startup founders and small business owners, understanding how to create a balance sheet is essential for making informed financial decisions, securing funding, and managing business growth. This article will break down the key components of a balance sheet and walk you through the step-by-step process of building one from scratch.

We previously covered the basics of reading and analyzing a balance sheet. As a refresher, a balance sheet is a financial report that outlines a company’s assets, liabilities, and shareholders’ equity.

Why is a balance sheet important?

A balance sheet isn’t just for external reporting — it also provides valuable insights into your company’s financial health. Investors and lenders rely on balance sheets to assess risk and determine creditworthiness. Founders and business owners can use them to evaluate their own risk and guide strategic decisions.

An accurate balance sheet can help you:

• Understand liquidity: How much cash and easily accessible assets a company has to cover its obligations.
• Evaluate solvency: Whether a company can manage its liabilities and sustain itself long-term.
• Monitor financial trends: Comparing balance sheets over time reveals growth, risk factors, and changes in capital structure.
• Prepare for funding opportunities: A clean and accurate balance sheet increases credibility with investors and lenders.

Whether you’re building one for internal financial management or external reporting, getting the details right is critical.

Before assembling a balance sheet, you need to gather the necessary financial data (it’s like preparing to file your taxes, but more fun). Here’s what you’ll need:

Assets

• Bank statements: Helps identify cash and cash equivalents.
• Invoices and accounts receivable: Reflect outstanding customer payments.
• Inventory records: These show the value of goods available for sale.
• Fixed asset records: Details about long-term assets like property and equipment.
• Prepaid expenses: Payments made in advance (e.g., insurance, rent).

Liabilities

• Loan agreements and credit balances: Identifies current and long-term debt.
• Payroll and benefits reports: Includes liabilities related to salaries and employee benefits.
• Accounts payable records: Details of outstanding payments to suppliers.
• Taxes payable: Any taxes owed but not yet paid.

Equity

• Retained earnings: Cumulative profits or losses retained in the business.
• Capital contributions: Funds invested by owners or shareholders.

Other helpful records

• Depreciation schedules: To account for the wear and tear of assets.
• Trial balance: Summarizes the balances of all ledger accounts for accuracy.

Not every item in this list will apply to every company. Accounting software like QuickBooks Online (QBO) or Xero can automate much of this process. If you use Mercury, our financial export tools can help streamline data collection.

Step 1: List and categorize assets

Start by listing all assets, separating them into current and non-current categories. Ensure valuations are accurate — cash and receivables are straightforward, but inventory and intangible assets may require careful valuation.

Step 2: List and categorize liabilities

Next, list all liabilities, distinguishing between short-term and long-term obligations. Be sure to include any accrued expenses and deferred tax liabilities, which are easy to overlook.

Step 3: Calculate shareholders’ equity

To calculate shareholders’ equity, follow these steps:

List all equity components individually:

• Common stock: The par value of shares issued.
• Additional paid-in capital: Any funds paid by shareholders above the par value.
• Retained earnings: Cumulative profits reinvested in the business, which can be found on the company’s profit and loss (P&L) statement. Be sure to subtract dividends paid out.
• Treasury Stock (if applicable): Subtract the cost of any repurchased shares.

Calculate total shareholders’ equity:

Add all the positive components and subtract any negative components (like treasury stock or accumulated losses). The formula is:

Shareholders’ equity = common stock + additional paid-in capital + retained earnings − treasury stock

Cross-Check Using the Accounting Equation:

As a validation step, check if the equity figure aligns with the balance sheet equation:

Shareholders’ equity = total assets − total liabilities

If both calculations match, the equity figure should be correct.

If the equation doesn't balance, it's a signal to revisit your asset, liability, and equity figures for missing accounts or incorrect valuations.

Common troubleshooting areas include data entry errors, missing accruals, or misclassified accounts.

If your balance sheet doesn’t reconcile, check for these common errors first:

• Misclassified transactions: Double-check that assets and liabilities are categorized correctly.
• Omitted accounts: Ensure all accounts are included, especially accrued expenses and inventory adjustments, which are easy to miss.
• Timing errors: A transaction may have been recorded in the wrong period.
• Incorrect depreciation or inventory valuation: These adjustments can significantly impact asset values.

Tips for accuracy

• Reconcile bank accounts monthly to catch discrepancies early.
• Use consistent accounting methods for depreciation and inventory valuation.
• Review prior financial statements to identify unusual changes or omissions.

A well-structured balance sheet is a powerful financial tool that clearly shows your company’s financial standing. By building one accurately and regularly reviewing it, you can make better business decisions, attract investors, and maintain financial stability.

While it’s possible to create a balance sheet manually, accounting software and financial integrations — such as those available with Mercury, QuickBooks, and Xero — can help simplify the process and reduce errors.

With a solid grasp of balance sheets, you’ll be better equipped to manage your company’s growth and financial health.

To get started building your balance sheet, check out our balance sheet template.