Loan capital is money a business or individual borrows under a binding obligation to repay the principal, plus interest, by a set date. It sits opposite equity on the balance sheet and forms a core piece of almost every company’s capital structure. The cost, flexibility, and risk of loan capital depend on whether the debt is secured, how it’s structured, and how much the borrower already owes.
The Features Every Loan Shares
Strip any loan down and the same four pieces appear. The borrower receives a defined sum, called the principal. Interest accrues on that sum at an agreed rate. The principal has to be returned by a specific maturity date. And if the borrower misses any of those obligations, the loan is in default, which opens the door to penalty fees, seizure of collateral, or a lawsuit for the full balance.
Interest rates come in two flavors. A fixed rate holds steady for the life of the loan. A variable rate floats above a benchmark, most often the Secured Overnight Financing Rate, so your payment moves with the market.1Federal Reserve Bank of New York. Secured Overnight Financing Rate Data Which structure you get depends on the loan type, the lender, and your creditworthiness.
Secured and Unsecured Loan Capital
Loan capital splits into two broad categories. Secured debt requires the borrower to pledge specific assets, called collateral. If the loan goes bad, the lender can seize and sell those assets to recover what it’s owed. Unsecured debt relies entirely on the borrower’s promise to pay. That makes it riskier for the lender and almost always more expensive for the borrower.
When a lender does take collateral, the paperwork doesn’t stop at the loan agreement. The lender has to “perfect” its security interest, which is the legal step that establishes priority over any other creditor who later claims the same assets. For most business assets like equipment, inventory, and receivables, perfection happens through filing a UCC-1 financing statement with the state.2Legal Information Institute. UCC Financing Statement For real estate, the equivalent is recording a mortgage or deed of trust with the county. Creditors who file first generally have priority over those who file later.
The practical consequence for a borrower: once a lender files a UCC-1 against your assets, that filing shows up when other lenders run a check, which limits your ability to pledge the same collateral somewhere else.
How Loan Capital Differs from Equity
The split between loan capital and equity is one of the most important distinctions in business finance. It changes who controls the company, who gets paid first if things go wrong, and how the financing is taxed.
Control
Lenders have no ownership. They can’t vote on corporate decisions, elect directors, or block a sale. What they can do is impose covenants, which are contractual restrictions on how the borrower runs the business. A covenant might require you to keep a minimum cash balance or prohibit you from taking on more debt. That’s not ownership, but it’s real influence.
Equity investors own a piece of the company. They vote, they share in profits, and they bear the residual risk. Their return floats with company performance; a lender’s return is fixed at the agreed interest rate no matter how well the business does.
Priority If the Company Fails
When a company enters Chapter 7 liquidation, a trustee gathers and sells the non-exempt assets and distributes the proceeds in a strict federally defined order.3United States Courts. Chapter 7 Bankruptcy Basics Priority claims like employee wages and tax debts come first. General unsecured creditors come next. Only after every creditor claim has been satisfied does anything flow to equity holders.4Office of the Law Revision Counsel. 11 USC 726 – Distribution of Property of the Estate Secured creditors sit in an even stronger spot, because they can look to their specific collateral before the general distribution even starts.
In practice, equity holders in a liquidation usually get nothing. The assets rarely stretch far enough. This payment order is exactly why lenders accept lower returns than equity investors: their money is better protected.
Why Companies Use Loan Capital: The Tax Shield
Under federal tax law, interest paid on business debt is generally deductible, which lowers taxable income and makes the real cost of borrowing less than the stated rate.5Office of the Law Revision Counsel. 26 USC 163 – Interest Dividends to equity holders get no such treatment; they come out of after-tax profits.
The math matters. A company paying 6% interest with an effective tax rate of 21% has an after-tax cost of debt closer to 4.7%. That built-in discount is a big reason most companies carry at least some debt rather than funding everything with equity.
The deduction has a ceiling, though. Section 163(j) of the Internal Revenue Code limits how much business interest a company can deduct in a given year to the sum of its 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 the cap gets carried forward, not lost, but a heavily leveraged company may not capture the full benefit in the year it pays.
Common Forms of Loan Capital
Term Loans
The most straightforward form. The lender hands over a lump sum, and the borrower repays it on a fixed schedule of principal and interest. Equipment loans typically amortize over five to twelve years, matching the useful life of the asset. Commercial real estate loans often stretch twenty to twenty-five years. Commercial banks are the usual source. Borrowers who can’t qualify for conventional bank financing often turn to the SBA 7(a) program, where the government guarantees a portion of loans made by participating private lenders.7U.S. Small Business Administration. 7(a) Loans
Lines of Credit
A line of credit works more like a credit card than a loan. The lender approves a maximum limit, and the business draws funds as needed, repays them, and draws again. Interest accrues only on the outstanding balance. The structure fits seasonal cash flow swings and short-term gaps between receivables.
Bonds and Commercial Paper
Larger companies can borrow directly from institutional investors through the public debt markets rather than going to a bank. Bonds are the primary vehicle, issued with a stated face value, maturity date, and coupon rate. The terms are set out in a legal document called an indenture, which spells out covenants, payment schedules, and default remedies.
Commercial paper handles the short end. These are unsecured promissory notes with maturities of up to 270 days, issued by large corporations with strong credit ratings to cover immediate working capital needs.8Board of Governors of the Federal Reserve System. Commercial Paper Rates and Outstanding Summary Because the maturity stays under nine months, commercial paper is exempt from SEC registration, which keeps issuance fast and cheap.
Subordinated and Mezzanine Debt
Not all loan capital sits at the same rung. Subordinated debt ranks below senior debt in the repayment order. If the borrower defaults, senior lenders get paid first, and subordinated lenders collect from whatever remains. The added risk means higher interest rates.
Mezzanine financing is a particular kind of subordinated debt that blends features of debt and equity. It often includes warrants or a conversion feature that gives the lender the right to acquire an ownership stake under certain conditions. Companies turn to mezzanine for acquisitions or major expansions after they’ve exhausted senior borrowing capacity but want to avoid diluting shareholders with a straight equity raise.
Convertible Notes
A convertible note starts as a loan and includes a provision allowing the lender to convert the outstanding balance into equity at a later date, usually triggered by a future fundraising round. Startups use convertible notes heavily because they let the company raise money without having to negotiate a valuation upfront. The note typically converts at a discount to whatever valuation the next investors set.
Leverage Cuts Both Ways
Adding loan capital to the capital structure introduces leverage. The idea is simple: borrow at 6%, invest in a project returning 12%, and the extra six percentage points flow to shareholders. During profitable periods, leverage amplifies equity returns in a way that feels close to free.
The amplification runs in reverse too. When revenue drops, 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 can turn a slowdown into a solvency crisis. Loan capital is the cheapest form of financing right up to the point where it becomes the most dangerous.
Lenders watch leverage with specific metrics. The debt service coverage ratio, which compares operating income to required debt payments, is one of the most common. A ratio above 1.25 is generally considered comfortable and unlocks the best loan terms. Between 1.0 and 1.25, the company is barely covering its obligations. Below 1.0, most conventional lenders won’t extend new credit without significant additional collateral or a much higher rate.
Covenants, Default, and Personal Guarantees
Loan agreements come with covenants, which are contractual conditions the borrower has to meet throughout the life of the loan. Financial covenants might require minimum debt-to-equity, minimum current ratio, or minimum debt service coverage. Non-financial covenants might bar additional borrowing, cap dividends, or block the sale of key assets.
Breaking a covenant is called a technical default, and it carries consequences even if every payment has been made on time. The most important is the acceleration clause. Most commercial loan agreements let the lender declare the entire outstanding balance immediately due and payable when a material breach occurs.9Legal Information Institute. Acceleration Clause Few acceleration rights trigger automatically; the lender usually has discretion, and borrowers can sometimes cure the default first.
In practice, most covenant violations don’t end in acceleration. Lenders generally prefer to negotiate a waiver or amend the terms rather than force a fire sale. But the threat gives the lender significant leverage in those talks. Waiver fees, higher rates, tighter covenants going forward, or additional collateral demands are all common outcomes. A borrower who assumes a covenant breach is harmless because “the bank won’t actually call the loan” underestimates how fast the negotiation turns against them.
Personal Guarantees
For small and mid-sized businesses, the loan 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 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.
Your home, savings, and other personal assets can be at risk under a personal guarantee, even if the business is set up as an LLC or corporation. The liability shield of the business entity does not protect you from a debt you’ve personally guaranteed. Read the guarantee before you sign it, and know exactly what you’re putting on the line.