Equity and Key Ratios:

What Every Small Business Owner Should Know

By DTI Bookkeeping

Sales and profit get most of the attention, but they don't tell you what your business is actually worth to you. Equity does. Combined with a handful of simple ratios, it shows how healthy your business is, how much you've built, and whether you're ready for a loan, a growth investment, or a sale. All of it depends on one thing: books you can trust.

What Is Equity?

Equity is the value left over for the owner after every debt is paid. It is the book value of your business on the balance sheet.

Equity = Total Assets − Total Liabilities

Assets are what the business owns: cash, equipment, vehicles, inventory, and money customers owe you. Liabilities are what it owes: loans, unpaid bills, credit card balances, and taxes payable.

Example: A business with $500,000 in assets and $300,000 in liabilities has $200,000 in equity. That is the owner's claim on the business once all debts are settled.

Why Equity Matters to a Business Owner

It shows the value you've built. Rising equity means the business is gaining real worth, not just bringing in revenue.
It signals financial stability. Healthy equity means you can cover your debts and still have value left over, which lowers risk.
It affects loan approval. Lenders look at equity to judge whether you can repay borrowed money. Stronger equity usually improves your chances and your terms.
It tracks performance over time. Changes in equity reflect profits, losses, and how well the business is managed.
It matters in a sale or with investors. Buyers and partners start with your equity position.

What Makes Up Equity

The pieces depend on how your business is set up, but most small businesses will see some of these:

Owner's capital: money you put into the business.
Retained earnings: profits kept in the business instead of paid out.
Owner draws or dividends: money taken out for personal use, which reduces equity.
Share capital and additional paid-in capital: money raised from issuing shares, for corporations.
Reserves: profits set aside for a specific purpose.

Entity type matters. A sole proprietor tracks one owner's equity. A partnership keeps a separate capital account for each partner. A corporation tracks shareholders' equity. Your accountant can confirm the right treatment for your entity.

What Affects Your Equity

Equity goes up when:

You invest more money in the business
The business earns a profit and keeps it
Shares are issued to investors

Equity goes down when:

The business has a net loss
You take owner draws or pay dividends
The company buys back its own shares

Positive and negative equity: Positive equity means assets exceed liabilities, a sign of stability that lenders and investors prefer. Negative equity means liabilities exceed assets, often caused by ongoing losses, heavy debt, or a drop in asset values. Spotting a slide toward negative equity early gives you time to act.

Key Ratios to Track

Ratios turn raw numbers into a scorecard. These are the ones worth watching:

Net profit margin = Net income ÷ Revenue. How much of every sales dollar you keep.
Return on equity (ROE) = Net income ÷ Equity. How hard the money invested in your business is working.
Return on assets (ROA) = Net income ÷ Total assets. How efficiently your assets produce profit.
Debt-to-equity = Total liabilities ÷ Equity. How much you rely on borrowed money versus owner funds.
Debt-to-assets = Total liabilities ÷ Total assets. The share of your assets financed by debt.
Current ratio = Current assets ÷ Current liabilities. Whether you can cover short-term bills.
Return on investment (ROI) = (Gain − Cost) ÷ Cost. Whether a specific purchase or project paid off.

What counts as a healthy ratio varies by industry and business size, so use your accountant to interpret yours.

Where Bookkeeping Errors Distort Equity and Ratios

Every number above comes from your books. When the books are wrong, the ratios are wrong. Common culprits:

Owner draws coded as expenses. Profit is understated and equity is misstated.
Duplicate transactions. Income or expenses are overstated.
Misclassified transactions. Expenses posted as income, refunds on the wrong side, and transfers between your own accounts counted as revenue or spending.
Loan payments recorded as expenses. Principal belongs against the loan balance, not in expenses, so profit and liabilities are both off.
Missing depreciation. Vehicles and equipment look more valuable than they are.
Unrecorded bills or loans. Liabilities are understated and equity looks stronger than it is.
Unreconciled bank accounts. Cash balances may not match reality.
Unexplained balances in Opening Balance Equity. A sign that setup or earlier cleanup was never finished.

A Quick Example

Two versions of the same business:

Books done right illustratiive example: Net income $60,000, equity $400,000. ROE = 15%.

Owner draw miscoded as an expense: An $15,000 owner draw is recorded as an expense, so net income drops to $45,000 while equity drops to $385,000. ROE = 12%.
If the draw had been recorded, it could have reduced equity to $385,000 and kept net profit at $60,000.ROE WOULD be 16%
The business didn't change. The bookkeeping did. A lender or buyer reading the second set of books sees a weaker business than the one you actually run. (Illustrative example with simplified figures.)
“Healthy ratio ranges vary by industry. We work alongside your accountant on interpretation.”

How Accurate Books Protect You

Reliable ratios require a reliable foundation. Good bookkeeping means:

Every transaction is categorized and supported by documents
Bank and credit card accounts are reconciled to statements
Customer payments and vendor bills are matched correctly
Loans and fixed assets are recorded from lender schedules and asset records
Closed periods are reviewed and locked

When those steps are done, your equity and ratios reflect your real financial position, and you can use them to price, hire, borrow, and invest with confidence.

Ready to Trust Your Numbers?

If your books are behind, or you aren't sure they're telling the true story, DTI Bookkeeping can help. We clean up, reconcile, and maintain your books so the numbers you rely on are accurate. Explore our services or request a free books health check.

We are bookkeepers, not CPAs. We work alongside your accountant on tax, equity treatment, and filed-period questions. This article is general information, not accounting, legal, or tax advice.