Using debt to buy assets works when the return on what you’re buying is greater than the cost of the money you borrowed to buy it. A rental property earning 8% a year, financed at 5%, lets you keep the 3-point spread while controlling something you couldn’t have bought outright. The same math applies to a business buying equipment that generates revenue, or an investor borrowing against a securities portfolio to buy more securities. Leverage magnifies gains and losses in equal measure, which is why lenders test you hard before funding and why the terms you sign matter as much as the price you pay for the asset.
When Borrowing to Buy an Asset Actually Works
The strategy rests on a spread. If the income or appreciation from the asset outpaces your interest cost, financing beats paying cash because your own capital stays free to do other work. If the spread narrows or reverses, leverage works against you at the same speed it worked for you. A 25% drop in a fully margined stock position, for example, wipes out half your equity, and the broker can sell your holdings without asking.
Two questions decide whether debt is the right tool for a given asset: can the asset itself produce the cash to service the loan, and can you absorb a period where it can’t? Everything else — the lender’s checklist, the paperwork, the tax treatment — flows from those two questions.
What Lenders Look at Before Approving You
Credit Score
Your FICO score is the first filter. Most lenders require a minimum of 620 for a conventional fixed-rate residential mortgage.1Fannie Mae. General Requirements for Credit Scores FHA-backed loans go down to 580 with a 3.5% down payment. Higher scores unlock lower rates: a borrower at 760 will generally see rates a full percentage point or more below someone at 640.
Income and Debt-to-Income Ratio
Lenders verify income through two years of tax returns, recent W-2s, or profit-and-loss statements for the self-employed. Many also send Form 4506-C to the IRS to pull your tax transcripts and compare them against what you claimed on the application.2Internal Revenue Service. Form 4506-C IVES Request for Transcript of Tax Return
Debt-to-income ratio is total monthly debt payments divided by gross monthly income. Most conventional lenders prefer it below roughly 43 to 45%, though it’s no longer a fixed regulatory line. The federal Qualified Mortgage rule now uses a pricing test: a loan qualifies as long as its annual percentage rate doesn’t exceed the average prime offer rate by more than 2.25 percentage points.3Regulations.gov. General Qualified Mortgage Loan Definition – Delay of Mandatory Compliance Date A lower DTI still buys you better pricing and smoother underwriting.
Down Payment and Loan-to-Value
Loan-to-value measures how much you’re borrowing against the asset’s value. On a primary residence, conventional fixed-rate mortgages allow LTVs up to 97%, so 3% down is possible.4Fannie Mae. Eligibility Matrix Anything below 20% down triggers private mortgage insurance. Investment properties and commercial real estate require 20 to 30% down because the lender’s risk is higher when the borrower doesn’t live in the property.
Appraisal and Personal Financial Statement
A professional appraisal confirms the asset is worth what you’re paying. You’ll also submit a Personal Financial Statement listing everything you own and everything you owe. Some versions of this form, including SBA Form 413 used for government-backed business loans, are signed under penalty of perjury, so what goes on it needs to match reality.5Office of the Law Revision Counsel. 28 USC 1746 – Unsworn Declarations Under Penalty of Perjury
Matching the Loan to the Asset
Real Estate
Residential mortgages typically run 15 or 30 years with fixed or adjustable rates, and the property itself is the collateral. Commercial mortgages tend to have shorter amortization schedules and often include a balloon payment — a large lump sum at the end of the term — that effectively forces a refinance.
Securities-Based Lending and Margin
If you hold stocks or bonds in a brokerage account, you can borrow against them. Federal Reserve Regulation T lets you buy securities on margin by borrowing up to 50% of the purchase price, so $50,000 in cash can control $100,000 in stock.6eCFR. 12 CFR 220.12 – Supplement: Margin Requirements Once you’re in the position, FINRA rules require that your equity stay above 25% of the account’s current market value, though many brokerages set their maintenance threshold at 30 or 40%.7FINRA. Margin Regulation Fall below the floor and you’ll get a margin call demanding immediate cash or forced sales.
SBA and Equipment Loans
The Small Business Administration’s 7(a) program provides up to $5 million for equipment, real estate, or working capital.8U.S. Small Business Administration. 7(a) Loans SBA doesn’t lend directly; it guarantees 85% of loans of $150,000 or less and 75% above that, which pulls in lenders who otherwise wouldn’t approve the borrower.9U.S. Small Business Administration. Terms, Conditions, and Eligibility
Straight equipment loans are usually structured so the repayment term matches the asset’s useful life. A commercial oven expected to last seven years gets a seven-year loan, with the equipment itself as collateral. The business doesn’t have to pledge additional property, and the asset generally pays for itself through the revenue it produces.
The Documents That Bind You to the Asset
Two separate instruments do the work in most secured loans. The promissory note is your personal promise to repay, laying out the rate, payment schedule, and consequences of late payment. Most notes include an acceleration clause letting the lender demand the entire balance if you miss payments, plus a due-on-sale clause that calls the balance if you transfer the property without paying off the loan.
The note doesn’t give the lender any claim on the property by itself. That’s what the mortgage or deed of trust does: it creates a recorded lien, giving the lender the right to foreclose if you default. The document is filed with the county recorder, which puts other creditors and buyers on notice of the lender’s claim.
When the collateral is business equipment, inventory, or other personal property rather than real estate, the lender uses a security agreement under Article 9 of the Uniform Commercial Code.10Cornell University. UCC Article 9 – Secured Transactions The lender then files a UCC-1 financing statement with the Secretary of State’s office. First to file generally wins if multiple lenders claim the same collateral. You remain responsible for maintaining the equipment and paying associated taxes as long as the lien is active.
Tax Advantages That Make Debt Cheaper Than It Looks
Mortgage Interest Deduction
If you itemize, you can deduct interest paid on mortgage debt used to buy, build, or substantially improve your primary or secondary home, up to $750,000 in total acquisition debt ($375,000 if married filing separately).11Internal Revenue Service. Publication 936 – Home Mortgage Interest Deduction Mortgages taken out before December 16, 2017 may still qualify under the prior $1 million limit. The One Big Beautiful Bill Act made the $750,000 cap permanent, so it no longer faces a scheduled expiration.
Business Interest Expense
Businesses that borrow to buy assets can deduct the interest, but Section 163(j) caps the deduction at business interest income plus 30% of adjusted taxable income. The One Big Beautiful Bill Act permanently restored the more favorable calculation that lets taxpayers add back depreciation and amortization when computing ATI. For tax years beginning in 2026, a new restriction excludes certain foreign subsidiary income from the ATI calculation, tightening the cap for multinational businesses.12Internal Revenue Service. Questions and Answers About the Limitation on the Deduction for Business Interest Expense Interest above the cap carries forward indefinitely. Small businesses with average annual gross receipts of $30 million or less are exempt entirely.
Staying Compliant After Closing
Funding isn’t the end of your obligations. Loan agreements impose covenants that can trigger default even when your payments are current.
Affirmative covenants require you to do things: keep insurance on the collateral, pay property taxes on time, maintain the equipment, and give the lender periodic financial statements. Negative covenants restrict what you can do: take on additional debt above a set level, sell or transfer collateral without permission, or pull cash out of the business above stated limits.
Commercial lenders often add a minimum debt service coverage ratio, calculated as net operating income divided by total debt service. A DSCR of 1.25 means the property throws off 25% more income than the loan payment requires. A dip in rents or a jump in operating costs can breach the ratio and put you in technical default without a single missed payment. This is the covenant that catches most commercial borrowers off guard.
What Default Costs You
Default doesn’t mean immediate seizure. For most residential mortgages, federal rules bar the servicer from starting foreclosure until the borrower is more than 120 days delinquent.13eCFR. 12 CFR 1024.41 – Loss Mitigation Procedures During that window you can apply for loan modification, a repayment plan, or forbearance. If you submit a complete loss mitigation application before the servicer files the first foreclosure notice, it must be evaluated before foreclosure moves forward.
If loss mitigation fails, the lender forecloses, seizing and selling the asset to recover what’s owed. The process runs a few months to over a year depending on whether your state requires court involvement. The part borrowers don’t anticipate is the deficiency judgment: if the foreclosure sale brings in less than the loan balance, the lender may sue you for the shortfall, meaning you can lose the asset and still owe money. States vary on when deficiency judgments are allowed and how they’re calculated. Knowing your state’s rule before you borrow is worth the hour it takes to find out.
For business assets secured by a UCC filing, the process is faster. The lender can generally repossess equipment without going to court, sell it, and apply the proceeds to the debt. If there’s a shortfall, the same deficiency exposure applies.