Loan capital is money a business borrows under a binding obligation to repay the principal, with interest, by a set maturity date. It sits opposite equity on the balance sheet and forms one of the two main ways a company funds itself. Unlike equity, loan capital carries no ownership rights, but it does carry a hard legal claim: miss a payment or breach the agreement, and the lender has remedies that range from penalty fees to seizing collateral to suing for the full balance.
The Features Every Loan Shares
Strip any loan down and you find the same four elements. A defined principal, an interest rate, a maturity date, and a default framework that spells out what the lender can do if the borrower doesn’t perform.
Interest is either fixed for the life of the loan or variable, meaning it floats above a benchmark. The most common benchmark for commercial lending is the Secured Overnight Financing Rate, a broad measure of overnight borrowing costs against Treasury collateral. 1Federal Reserve Bank of New York. Secured Overnight Financing Rate Data Commercial loans typically price as SOFR plus a spread, with the spread reflecting the borrower’s credit, loan size, and collateral.
Loan capital splits into two broad categories. Secured debt is backed by specific pledged assets; if the borrower defaults, the lender can seize them. Unsecured debt rests on the borrower’s promise to pay and general financial health, which makes it riskier for the lender and more expensive for the borrower.
How Lenders Protect Secured Loans
When a lender takes collateral, the loan agreement is only the beginning. The lender also has to “perfect” its security interest, which is the legal step that establishes priority over other creditors who might claim the same assets. Skip perfection and a later lender who does file can jump ahead in line.
For most business assets — equipment, inventory, accounts receivable — perfection means filing a UCC-1 financing statement with the state. That filing puts the world on notice of the lender’s claim, and creditors who file first generally have priority over those who file later. 2Legal Information Institute. UCC Financing Statement For real estate, the equivalent is recording a mortgage or deed of trust with the county recorder.
If you’re borrowing against business assets, the lender will almost certainly file a UCC-1. That filing shows up when other lenders run their checks, which limits your ability to pledge the same collateral elsewhere.
Loan Capital Versus Equity Capital
The line between loan capital and equity is the most consequential distinction in business finance. It reaches into taxes, control, and who eats the loss when things go wrong.
Control
Lenders have no ownership. They can’t vote, elect directors, or block a merger. What they can do is impose covenants — contractual restrictions on how the borrower operates. A covenant might require the company to keep a minimum cash balance or bar it from taking on additional debt. That isn’t ownership, but it’s real influence.
Equity investors own a piece of the company. They vote, share in profits, and bear the residual risk if the business fails. Their return is variable and depends entirely on performance. A lender’s return is fixed at the agreed rate regardless of how the business does.
Priority in Bankruptcy
In a Chapter 7 liquidation, a trustee collects and sells the company’s non-exempt assets and distributes the proceeds to creditors. 3United States Courts. Chapter 7 Bankruptcy Basics Federal law sets a strict payment order: priority claims like employee wages and tax debts first, then general unsecured creditors, and only after every creditor claim is satisfied does anything reach equity holders. 4Office of the Law Revision Counsel. 11 USC 726 – Distribution of Property of the Estate Secured creditors sit in an even stronger position because they can look to their specific collateral before the general distribution process begins.
Equity holders in a liquidation often receive nothing. This priority structure is exactly why lenders accept lower returns than equity investors: their money is better protected.
The Tax Shield
One of the biggest advantages of loan capital is tax treatment. Under federal law, interest on business debt is generally deductible, which reduces taxable income and effectively makes borrowing cheaper than its stated rate. 5Office of the Law Revision Counsel. 26 USC 163 – Interest Dividends paid to shareholders come out of after-tax profits and provide no deduction.
The math is real. A company paying 6% interest with a 21% effective tax rate has an after-tax cost of debt closer to 4.7%. That structural discount pushes most companies toward using at least some loan capital rather than funding everything with equity.
There’s a ceiling, though. Section 163(j) of the Internal Revenue Code limits how much business interest a company can deduct in a year. The deduction cannot exceed the sum of the company’s business interest income plus 30% of its adjusted taxable income. 6Internal Revenue Service. Questions and Answers About the Limitation on the Deduction for Business Interest Expense Interest above that cap carries forward rather than disappearing, but heavily leveraged companies may not capture the full benefit in the year they pay.
Common Forms of Loan Capital
Term Loans
A term loan is the most straightforward form of loan capital. The lender disburses a lump sum, and the borrower repays on a fixed schedule of principal and interest. Equipment loans are commonly amortized over the useful life of the asset, often five to twelve years. Real estate loans stretch much longer, typically twenty to twenty-five years.
Commercial banks are the usual source for small and mid-sized business term loans. For borrowers who don’t qualify for conventional bank financing, the SBA 7(a) program offers a government-backed alternative. The SBA doesn’t lend directly; it guarantees a portion of loans made by participating lenders, with guarantees of 85% for loans of $150,000 or less and 75% for larger amounts, up to a maximum loan size of $5 million. 7U.S. Small Business Administration. 7(a) Loans The guarantee makes lenders willing to approve borrowers they’d otherwise turn down.
Lines of Credit
A line of credit is a revolving facility. The lender sets a maximum borrowing limit, and the business draws funds, repays, and draws again as needed. Interest accrues only on the outstanding balance, not the full limit. That structure fits seasonal cash flow swings and short-term gaps between receivables.
Bonds and Commercial Paper
Larger, established companies can borrow directly from institutional investors through the public debt markets. Bonds are the main vehicle: the company issues debt securities with a face value, maturity, and coupon rate. The offering is governed by an indenture, a legal document spelling out covenants, payment schedules, and default consequences.
Commercial paper covers the shorter end. These are unsecured promissory notes with maturities up to 270 days, issued primarily by large corporations with strong credit ratings to cover immediate working capital needs, often at rates below bank loan rates. 8Board of Governors of the Federal Reserve System. Commercial Paper Rates and Outstanding Summary Because commercial paper matures in nine months or less, it qualifies for an exemption from SEC registration, which keeps issuance costs low.
Subordinated and Mezzanine Debt
Not all loan capital sits at the same level. Subordinated debt, sometimes called sub-debt, ranks below senior debt in the repayment order. If the borrower defaults, senior lenders get paid first and subordinated lenders collect only from what remains. That added risk carries a higher interest rate.
Mezzanine financing is a specific type of subordinated debt that blends debt and equity features. It often includes warrants or a conversion feature giving the lender the right to acquire an ownership stake under certain conditions. Companies typically reach for mezzanine financing when they’ve maxed out senior borrowing capacity but don’t want to dilute existing shareholders with a straight equity raise.
Convertible Notes
A convertible note starts as loan capital but includes a provision letting the lender convert the outstanding balance into equity at a future date, usually triggered by a qualifying event like a later fundraising round. Startups use convertible notes heavily because they let the company raise money without negotiating a valuation upfront. The note converts at a discount to whatever valuation the next round sets, compensating the earlier lender for taking on more risk.
Leverage: The Upside and the Danger
Adding loan capital to a company’s capital structure introduces leverage. Borrow at 6%, invest the funds in a project earning 12%, and the extra 6% flows to shareholders. During good periods, leverage amplifies equity returns in a way that feels almost free.
The amplification runs both directions. When revenue drops, the interest payments don’t. A company carrying heavy debt through a bad quarter faces the same fixed debt service on a shrinking cash base, which is how leverage turns a downturn into a solvency crisis. Loan capital is the cheapest form of financing right up until it becomes the most dangerous.
Because debt is cheaper than equity — fixed returns, senior claim, tax deductibility — adding some loan capital lowers a company’s overall cost of financing, its weighted average cost of capital. But only to a point. Past a certain leverage threshold, the risk of financial distress drives up both the cost of new debt and the return equity investors demand, and the overall cost starts climbing again.
Lenders watch leverage closely. The most common metric they track is the debt service coverage ratio, which compares operating income to required debt payments. Above 1.25 is generally comfortable and unlocks the best loan terms. Between 1.0 and 1.25 means the company is barely covering its debt. Below 1.0, most conventional lenders won’t extend new credit at all without significant additional collateral or a much higher rate.
Covenants, Default, and Personal Guarantees
Lenders don’t just hand over capital and wait. Loan agreements include covenants: contractual conditions the borrower must meet throughout the life of the loan. Common financial covenants require maintaining a minimum debt-to-equity ratio, a minimum current ratio, or a minimum debt service coverage ratio. Non-financial covenants might restrict additional borrowing, cap dividend payments, or bar the sale of key assets.
Violating a covenant is a “technical default,” and it triggers consequences even when no payment has been missed. The most significant is the acceleration clause. Most commercial loan agreements let the lender declare the entire outstanding balance immediately due and payable after a material breach. 9Legal Information Institute. Acceleration Clause Few acceleration clauses trigger automatically. The lender typically has discretion over whether to invoke it, and borrowers can sometimes cure the default before the lender acts.
Most covenant violations don’t end with acceleration. Lenders would rather negotiate a waiver or amend the terms than force a borrower into a fire sale. But the threat gives the lender enormous leverage in that negotiation. Waiver fees, higher interest rates, tighter future covenants, or additional collateral are all common outcomes. Borrowers who assume the bank “won’t actually call the loan” underestimate how sharply the dynamic shifts once they’ve breached.
Personal Guarantees
For small and mid-sized businesses, the agreement often reaches past the company and into the owner’s personal finances. Personal guarantees are standard on most business term loans, lines of credit, and even many loans labeled unsecured. An unlimited personal guarantee makes the owner fully responsible for the outstanding debt if the business can’t pay. Limited guarantees cap that exposure, often proportional to each owner’s share of the business, though some include joint-and-several liability that lets the lender pursue any single guarantor for the full amount.
The practical impact is serious. A personal guarantee puts your home, savings, and other personal assets at risk even if the business is structured as an LLC or corporation. The entity protections you set up don’t help if you’ve personally guaranteed the debt. Read the guarantee before you sign it, and know which of your assets you’re actually putting on the line.