Rule 1: Set Aside 30% of Freelance Income for Taxes
Verdict: Still valid, often low. Freelancers pay self-employment tax (15.3%) + federal income tax (12–22% typically) + state tax. At $60,000 net freelance income: SE tax = $9,180 + federal income = $5,000 + state = $2,400 = $16,580 total = 27.6%. 30% is a safe guideline; lower earners may find 25% sufficient; higher earners should use 35%.
Rule 2: The Mortgage Interest Deduction Always Helps
Verdict: Often false since 2018. With the standard deduction at $30,000 (MFJ), most homeowners with moderate mortgages never itemize and receive zero benefit from mortgage interest deduction. Only those with large mortgages ($400K+), significant charitable giving, and high SALT payments typically exceed the standard deduction.
Rule 3: You’re in the 22% Bracket, So You Pay 22% on Everything
Verdict: False. The 22% bracket only applies to income within that bracket range — not all income. A $85,000 earner in the 22% bracket pays 10% on the first $11,925, 12% on the next $36,550, and 22% only on the remainder. Effective rate is approximately 15.3%, not 22%.
2025 status of common income tax rules of thumb
| Rule | Status | More Accurate Guidance |
|---|---|---|
| Set aside 30% freelance for taxes | Valid (slightly low for high earners) | 25-35% depending on income level |
| Mortgage interest deduction is valuable | Mostly outdated | Only helps if total itemized > standard deduction |
| Your bracket % = your effective rate | False | Effective rate is significantly lower than marginal rate |
| Tax refunds mean you’re saving money | Misleading | Refund = interest-free loan to IRS; better to owe slightly |
| Only the rich need to worry about taxes | False | Tax planning benefits any income where decisions matter |
Test the Rules Against Your Real Situation
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