Personal finance Study Guide

📖 Core Concepts Personal finance – Managing your money (budgeting, saving, spending) to meet present needs and future risks such as retirement, medical emergencies, and education. Net worth – Total assets minus total liabilities; the “balance sheet” of an individual. Cash flow – Income minus expenses over a period; indicates whether you’re living within your means. Emergency fund – Cash reserve covering ≥ 6 months of living expenses for unexpected events. Tax‑advantaged accounts – Retirement or education accounts (e.g., 401(k), IRA, 529) that reduce taxable income or growth. Asset allocation – Splitting investments among stocks, bonds, cash, and alternatives to match risk tolerance and time horizon. Credit score – Numerical rating (300‑850) reflecting payment history, balances, age of accounts, inquiries, and credit mix. --- 📌 Must Remember Pay credit‑card balances in full each month. Save/invest 10 %–20 % of post‑tax income. Emergency fund = ≥ 6 months of expenses. Maximize contributions to tax‑advantaged retirement/education plans. Favor low‑cost, diversified mutual funds; avoid frequent trading. Choose a fiduciary adviser if you need professional help. For credit: on‑time payments, low balances, long‑standing accounts, few inquiries, diverse credit types → higher score. --- 🔄 Key Processes Personal Financial Planning Cycle Assessment – Build a simple balance sheet & income statement. Goal Setting – Write short‑term (e.g., buy a laptop) and long‑term (e.g., $1 M net worth at retirement) goals. Plan Creation – Identify actions: cut expenses, raise income, allocate to fixed deposits or investments. Execution – Implement with discipline; consider accountants, planners, or lawyers. Monitoring & Reassessment – Review results vs. targets regularly; adjust for life changes. Building an Emergency Fund Calculate monthly living expenses → multiply by 6. Prioritize high‑yield savings account, fund gradually (e.g., $200–$500 per paycheck) until target met. Credit Score Improvement Loop Pay all bills on time → lower payment history risk. Keep utilization < 30 % of limits → lower credit utilization factor. Keep old accounts open → longer average age. Limit new credit inquiries → fewer hard pulls. --- 🔍 Key Comparisons Savings vs. Investing – Savings: low risk, high liquidity, used for emergency fund. Investing: higher risk, potential growth, for long‑term goals. Low‑cost mutual fund vs. Frequent trading – Mutual fund: diversifies, lower fees, aligns with “avoid frequent trading.” Frequent trading: higher transaction costs, tax drag, lower net returns. Buying vs. Renting a home – Buying: down‑payment, mortgage, maintenance, potential equity. Renting: no down‑payment, flexibility, no maintenance, no equity buildup. Credit Card “Buy Now, Pay Later” vs. Cash Payment – Credit: can earn rewards but adds liability if not paid in full; cash avoids interest entirely. --- ⚠️ Common Misunderstandings “Paying only the minimum is enough.” – Minimum payments keep debt longer, increase interest paid, and can overwhelm cash flow. “Investing in a single stock is diversification.” – True diversification spreads money across asset classes (stocks, bonds, cash). “More credit cards automatically raise my score.” – Too many inquiries or high balances can hurt the score; quality matters more than quantity. “Emergency fund can be in a retirement account.” – Retirement accounts have penalties/fees for early withdrawal; emergency fund needs easy, penalty‑free access. --- 🧠 Mental Models / Intuition “Pay yourself first.” – Treat savings/investments like a non‑negotiable expense right after you receive income. “The 50/30/20 rule (approx.) – 50 % needs, 30 % wants, 20 % savings/debt repayment; helps visualize cash flow allocation. “Compound interest works both ways.” – Debt grows with interest; savings grow with interest. Pay high‑interest debt first, then let investments compound. --- 🚩 Exceptions & Edge Cases High‑interest student loans vs. low‑interest mortgage – Prioritize paying higher‑rate debt first even if it’s not a “credit‑card.” Tax‑advantaged contribution limits – If you exceed IRA/401(k) limits, excess contributions may incur penalties. Credit score impact of medical debt – Unpaid medical bills can appear on credit reports, but many scoring models treat them less harshly than revolving debt. --- 📍 When to Use Which Emergency fund vs. Investment account – Use a high‑yield savings account for emergencies; use mutual funds for long‑term growth. Credit card vs. Personal loan – Use a credit card for short‑term, fully‑paid purchases (to earn rewards). Use a personal loan for larger, fixed‑rate borrowing (e.g., debt consolidation). Fixed‑rate vs. Adjustable‑rate mortgage – Choose fixed‑rate if you expect rates to rise or want payment stability; choose adjustable only if you plan to sell/refinance before rate adjustments. --- 👀 Patterns to Recognize “Six‑month expense × 1” → Immediate flag for an insufficient emergency fund. “Debt > 30 % of income” → Likely cash‑flow strain; consider debt‑reduction plan. “Only one type of insurance” – Missing coverage (e.g., no disability insurance) → potential risk gap. “Net worth increasing but cash flow negative – Growing assets (e.g., home equity) but overspending; need expense control. --- 🗂️ Exam Traps Distractor: “Invest all savings in a single high‑yield stock.” – Wrong because it ignores diversification and risk. Distractor: “A credit score of 600 is acceptable for all loans.” – Many lenders require higher scores; 600 may lead to high rates or denial. Distractor: “You can count your 401(k) balance toward the emergency fund.” – Wrong; retirement funds are not liquid without penalties. Distractor: “Maximum credit‑card rewards outweigh interest costs.” – Only true if you pay the full balance each month; otherwise interest erodes rewards. ---