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L.6 · BEGINNER · 2 MIN

Debt Management: Good Debt vs. Bad Debt

Not all debt is created equal. A mortgage at 4% that builds equity in an appreciating asset is fundamentally different from credit card debt at 22% on depreciating purchases. Understanding this distinction is essential for financial decision-making.

Quiz · 5 questions ↓
§ 01
Debt TypeRateAsset BehaviorVerdict
Credit card18–28%Depreciating (consumer goods)Bad — pay off immediately
Auto loan5–12%Depreciating (loses 20% year 1)Acceptable if rate < 6%
Student loans4–8% (federal undergrad 2025-26: 6.39%; federal grad unsubsidized: 7.94%; PLUS: 8.94%)Appreciating (earning potential)Acceptable if degree boosts income — see federal repayment options below
Mortgage6–7.5% (2023-2026 range; floor 3% briefly in 2020-21)Appreciating (real estate)Usually good — interest deduction available ONLY if you itemize (post-TCJA: <12% of households do)
Business loanVariablePotentially appreciatingGood if ROI > cost of debt
§ 02

Federal student loans offer multiple repayment paths that private loans do not. The federal interest pause (COVID-era) ended in October 2023 — interest is accruing again on all federal loans. Verify current plan availability at studentaid.gov — court rulings and Department of Education guidance have changed details multiple times since 2023. Source: studentaid.gov/manage-loans/repayment/plans.

§ 03
PlanMonthly PaymentForgivenessInterest Behavior
Standard 10-yearFixed amortized payment (highest monthly amount)No forgiveness path — fully repaid at end of termAccrues normally; you pay the least total interest of any path
IDR (PAYE / IBR / SAVE)5-10% of discretionary income; lower than Standard for most borrowersBalance forgiven after 20-25 years; forgiven amount is currently taxable income (verify IRS guidance — a temporary exclusion existed through 2025)SAVE plan included a subsidized-interest waiver while in repayment (struck down by courts 2024-25; verify current plan status at studentaid.gov)
PSLF (Public Service)Same as qualifying IDR plan while working at a qualifying employerRemaining balance forgiven after 10 years (120 qualifying payments); PSLF forgiveness is currently tax-free (unlike standard IDR forgiveness)Interest accrues normally; only Direct Loans qualify — FFEL loans must be consolidated first
Deferment / ForbearancePayments paused temporarilyNo forgiveness path — the clock stops; balance may growSubsidized loans: government may pay interest during deferment. Unsubsidized loans and forbearance: interest accrues and capitalizes — your balance grows while payments pause
§ 04

Paying off a credit card at 22% interest is a risk-free cost reduction equivalent to a 22% pre-tax return — the highest such reduction available in personal finance. Always pay off high-interest debt before investing (except for employer 401(k) match).

§ 05
List all your debts with their interest rates. Any debt above 8% should be paid off before investing in the stock market (expected 10% return minus taxes and fees ≈ 7–8% net).
§ 06
You have $5,000 in savings, a $3,000 credit card balance at 22%, and want to start investing. What should you do first?
Five questions · AI feedback

Sit with the ideas.

A new graduate has $30K student loans at 5%, $8K credit card debt at 21%, and a $60K salary with a 100% 401(k) match up to 3%. With $500/month extra, what's the optimal allocation?

Why:
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