Loans & Mortgages
Auto, mortgage, personal, student — when refinancing actually pays.

Borrowing in the United States is structurally cheaper than in most developed economies — and structurally easier to get wrong. The combination of a deep mortgage market, a competitive consumer-loan market, the 30-year fixed-rate mortgage (a US-specific product), and a large federal student loan system creates options that simply do not exist elsewhere. It also creates a lot of products where the headline rate hides a fee structure, where the term length materially changes total cost, and where the right decision depends on facts about your future (how long you will hold the loan, whether you will refinance, whether your income will change) that you cannot know in advance.

This section covers the four loan categories that account for most US household debt: mortgages (conventional, FHA, VA, jumbo, ARM vs fixed), auto loans (new, used, refinance, lease-vs-buy), personal loans (debt consolidation, home improvement, medical), and student loans (federal, private, refinance, forgiveness pathways). Each has its own qualifying gates (DTI, LTV, credit score thresholds), its own rate structure (fixed vs variable, term tiers, fee composition), and its own break-even decisions (when to refinance, when to prepay, when to consolidate).

Three structural facts shape every recommendation in this section. First, APR — not interest rate — is the right metric for comparison. APR bundles in origination fees, points, and applicable insurance costs that the borrower actually pays. Two loans with identical rates can have meaningfully different APRs; the higher-APR loan is the more expensive one in cash terms even if the rate looks the same. Second, the term length matters as much as the rate. A 15-year mortgage at 6% has higher monthly payments but materially lower total interest than a 30-year mortgage at 6%; whether that is the right tradeoff depends on your cash-flow situation and what you would do with the freed monthly cash. The calculators expose both numbers side by side. Third, refinancing math depends on the break-even period. The closing costs of a refi are real cash; recouping them takes time. If you do not hold the loan past the break-even period, the refi loses money even when the rate looks better.

Two structural recommendations apply almost universally across the four loan categories. First, shop at least three lenders — one national bank, one credit union, and at least one online or non-bank lender — for any meaningful loan, inside a single rate-shopping window so the multiple hard inquiries compress into one on the credit-bureau side. The cost is one inquiry; the savings frequently run into the thousands of dollars over the life of the loan because dealer markup and bank-channel markup are real and respond to credible outside offers. Second, federal student loans deserve special caution. The protections embedded in federal loans — income-driven repayment, Public Service Loan Forgiveness, generous deferment and forbearance, death and disability discharge — have substantial option value that private refinancing extinguishes. For high earners with stable W-2 employment outside PSLF pathways, private refinancing can pencil out; for most others it does not. The comparisons and calculators in this section make both pieces of math explicit.