Car Financing Articles

Practical examples for comparing auto loans, cash purchases, 401(k) loans, manufacturer rebates, monthly payments, and five-year total cost of ownership. These articles explain the decisions that the calculator models so you can understand why one funding path may be cheaper than another.

The common theme is that car-buying math is rarely just a payment calculation. Taxes, investment opportunity cost, rebate restrictions, loan terms, and ownership costs can all change the result. Start with the topic closest to your decision, then use the calculator to test your own numbers.

• Auto Loan vs Cash: Which Is Actually Cheaper? Compare visible loan interest with capital gains tax and missed investment growth.
• Should You Use a 401(k) Loan to Buy a Car? Review opportunity cost, employment risk, plan limits, and repayment tradeoffs.
• When a Manufacturer Rebate Makes Financing Cheaper Than Paying Cash Learn when a financing-only rebate can outweigh short-term loan interest.
• Why Monthly Payment Is a Bad Way to Compare Car Deals See how longer terms and hidden tradeoffs can make a low payment more expensive.
• How to Estimate 5-Year Total Cost of Ownership Compare purchase economics with fuel, insurance, maintenance, registration, and tires.

All articles are educational only and are not financial, tax, legal, lending, or investment advice. Last updated June 26, 2026.