This guide breaks down 62 terms across accounting, investing, banking and taxation. Every definition is short, every example is real, and there is no filler. Bookmark it — you will come back.
A note on regional terminology
This glossary mixes common terms from the US, UK and India, because most readers encounter all three. Where a term has a meaning specific to one country — like W-2, Form 16, FICO, or GST versus VAT — we note it in the definition. Always check what applies in your own jurisdiction.
1 Accounting — the basics
Accounting is how businesses keep score. These are the words you see in every financial report, invoice, and business meeting.
Assets
Anything you own that has value. Cash, a house, a car, even money someone owes you.
Liabilities
Anything you owe. Loans, credit card balances, unpaid bills — all liabilities.
Equity
What is actually yours after subtracting what you owe. Assets minus liabilities.
Balance Sheet
A snapshot of what a company owns and owes on a specific day. Like a financial photograph.
Income Statement
A movie of how much money came in and went out over a period. Shows profit or loss.
Cash Flow Statement
Tracks actual cash moving in and out. Profit on paper means nothing if cash is not moving.
Debit
In accounting, the left side of the ledger. Increases assets, decreases liabilities.
Credit
The right side of the ledger. Increases liabilities and revenue, decreases assets.
Revenue
The total money a business brings in from sales — before any costs are subtracted.
Expenses
Costs you pay to run the business. Rent, salaries, electricity, materials.
Depreciation
When a physical asset loses value over time. Spreads the cost of a big purchase across its useful life.
Amortization
Same idea as depreciation, but for intangible things like patents, trademarks, or loans.
Accrual Accounting
You record a transaction when the deal happens, not when cash changes hands. More accurate, but trickier to manage.
Working Capital
Money available for day-to-day operations. Current assets minus current liabilities.
Gross Profit
Revenue minus the direct cost of making what you sold. Before rent, salaries and taxes.
2 Investing — growing your money
Investing is how you make money work for you instead of the other way around. These are the words you see on every finance app and news headline.
Stocks
A tiny slice of ownership in a company. Own one share of Apple? You own a very small piece of Apple.
Bonds
A loan you give to a government or company. They pay you interest over the term, then return the principal.
Mutual Funds
A pool of money from many investors, managed by a professional who picks stocks and bonds for you.
ETF
Exchange-Traded Fund. Like a mutual fund, but it trades on the stock exchange like a regular stock.
Index Fund
A fund that tracks a market index (like the Nifty 50 or S&P 500). No stock-picking, just the market average.
Dividends
A cut of company profit paid to shareholders. Usually every quarter or year.
Portfolio
The full collection of everything you have invested in — stocks, bonds, funds, all together.
Diversification
Do not put all your eggs in one basket. Spread money across many investments to reduce risk.
Bull Market
A sustained period of rising prices. Commonly defined as a 20% or more rise from recent lows.
Bear Market
A sustained period of falling prices, commonly defined as a 20% drop from recent highs. Bad for now, often good for long-term buyers.
Volatility
How wildly prices swing up and down. High volatility means a bumpy ride.
Compound Interest
Interest that earns interest. Small money grows into big money if you leave it alone long enough.
SIP
Systematic Investment Plan. You invest a fixed amount every month automatically. Removes emotion from investing.
Expense Ratio
The yearly fee a fund charges, as a percentage of your money. Lower is better, by a lot.
Market Cap
Total value of a company: share price multiplied by the number of shares outstanding. Tells you how big a company is.
P/E Ratio
Price-to-Earnings. How much investors pay for every $1 of profit. A high P/E usually means growth is priced in.
The boring stuff is what works
Nobody gets rich from investing overnight. The strategies that actually work over decades are unglamorous: automatic monthly contributions, low-cost index funds, and holding. Anyone promising 40% monthly returns is running a scam, not an investment.
3 Banking — where your money lives
Banks love fancy words. Here is what they actually mean so you can spot a bad deal from a mile away.
Interest Rate
The cost of borrowing money, or the reward for saving. Usually shown as an annual percentage.
APR
Annual Percentage Rate. The yearly cost of a loan including fees. Use it to compare loans fairly.
APY
Annual Percentage Yield. Like APR but for savings, and it includes compound interest. The real growth rate.
Principal
The original amount you borrowed or deposited, before any interest is added.
Collateral
Something valuable you pledge to a lender in case you cannot repay. They take it if you default.
Credit Score
A number showing how reliably you repay debt. Higher is better. Ranges differ by country: US FICO uses 300–850, India CIBIL uses 300–900, UK Experian uses 0–999.
Debit Card
Spends money straight from your bank account. No debt created — it is your money, right now.
Credit Card
Borrows money from the bank to pay now, which you repay later. Miss a payment and interest can be 20–30% per year.
Overdraft
When you spend more than you have in your account. The bank covers it, but charges a fee and often interest.
Minimum Balance
The lowest amount you must keep in an account or face a penalty fee.
Fixed Deposit
You lock money in for a set period at a fixed rate. Higher rate than savings, but you generally cannot touch it early without a penalty.
Recurring Deposit
You deposit a fixed amount every month for a fixed term at a fixed rate. Like a SIP but through the bank.
Wire Transfer
Sending money electronically from one bank to another, often across borders. Fast but usually costs a fee.
Routing Number
A code that identifies your specific bank, used mainly in the US. You share it when someone sends you money.
EMI
Equated Monthly Instalment. The fixed monthly payment on a loan, mixing principal and interest. Common in India and other markets.
4 Taxation — the words that scare everyone
Taxes are unavoidable, but the jargon is not. Once you know these terms, filing and planning get far less intimidating.
Tax rules differ by country
The terms below come from a mix of US, UK and Indian tax systems. Where a term is specific to one country — like W-2, Form 16, or standard deduction amounts — the definition says so. Rates and rules change every year. Check your local tax authority for the current figures that apply to you.
Income Tax
Tax the government takes from the money you earn. The higher your income, the higher the rate on the top slice.
Tax Deduction
Money you subtract from your income before tax is calculated. Lowers your taxable income, not your tax directly.
Tax Credit
A direct cut to the tax you owe, dollar for dollar. Always worth more than a deduction of the same size.
Tax Bracket
Income ranges, each taxed at a different rate. Moving up a bracket only taxes the income above the threshold at the higher rate — not all of your income.
Capital Gains Tax
Tax on profit when you sell an investment for more than you paid. Long-term gains are usually taxed less than short-term ones.
Tax Evasion
Illegally hiding income or lying to pay less tax. A criminal offence. Do not.
Tax Avoidance
Legally using the rules to pay less tax. Usually fine — this is largely what accountants are for.
Standard Deduction
A fixed amount most taxpayers can subtract from income without itemising receipts. Amount varies by country and filing status.
Gross Income
Total money you earned before any taxes or deductions are taken out.
Net Income
What is actually left after taxes and deductions. The money you can actually spend.
W-2 / Form 16
Wage statements issued by your employer showing earnings and withheld tax. W-2 is US; Form 16 is India. Both serve the same purpose.
Withholding Tax
Tax taken out of your paycheck before you even see it, so you do not owe a huge lump at filing time.
Tax Refund
If too much tax was withheld, the government returns the excess. It is your own money coming back, not free money.
Property Tax
Tax paid on real estate you own, typically calculated as a percentage of assessed value. Usually paid annually to your local government.
GST / VAT
Consumption taxes added to purchases. GST (Goods and Services Tax) is used in India, Australia, Canada and others; VAT (Value Added Tax) is used in the UK, EU, and many other countries. Same idea, different names.
Tax Exemption
Income that is not taxed at all. Different from a deduction — the money is off the table entirely for that purpose.
Not tax advice
Tax law varies dramatically between countries and changes almost every year. These definitions are a vocabulary starter. For decisions about your actual return, talk to a qualified accountant in your jurisdiction or consult your tax authority directly.
Free calculators to apply this
Knowing the words is step one. These free tools help you plug in your own numbers.
Compound Interest Calculator
See how small monthly savings snowball over 10, 20, 30 years.
Open toolLoan EMI Calculator
Enter loan amount, rate and term — see your exact monthly payment.
Open toolSIP Calculator
Plan monthly investments and see estimated returns at different growth rates.
Open toolIncome Tax Return Helper
Estimate your tax liability and understand what you might owe or get back.
Open toolRetirement Calculator
Work out how much you need saved to retire comfortably.
Open toolRental Tax Calculator
Landlord? Estimate your taxable rental income after standard deductions.
Open toolPayment Processing Fee Calculator
See how much payment processor fees cost you per transaction.
Open toolAll Finance Tools
Browse every free finance and tax calculator on SkillsInsider.
Browse allQuick questions
What is the difference between a tax deduction and a tax credit?
A deduction lowers your taxable income — the number the tax rate is applied to. A credit lowers the actual tax you owe, dollar for dollar. If you are in the 25% bracket, a $1,000 deduction saves you $250 in tax. A $1,000 credit saves you the full $1,000. Credits are always worth more than deductions of the same face value.
Is a debit card better than a credit card?
They do different jobs. A debit card spends money you already have in your account, so it cannot create debt. A credit card borrows against a limit you repay later, which builds credit history and often earns rewards, but carries interest if the balance rolls over. If you pay the full balance every month, a credit card is usually the better tool. If you tend to overspend, stick with debit.
Do I really need to invest, or can I just save?
Both, in sequence. Save three to six months of expenses in cash as an emergency fund first. Anything beyond that is usually better invested, because cash sitting in a savings account typically loses purchasing power to inflation over long periods. Money that does not grow still shrinks in real terms.
What is the simplest way to start investing?
Buy a low-cost index fund, set up an automatic monthly contribution (a SIP in Indian terminology), and leave it alone for years. No stock picking, no market timing, no constant watching. Across 20 to 30 year horizons, this simple approach has historically outperformed the majority of actively managed funds, largely because of lower fees.
Is this page financial advice?
No. This is an educational glossary — it explains what terms mean, not what you should do with your money. Financial decisions depend on your income, obligations, tax situation and country of residence. Before making any significant financial decision, consult a qualified professional in your jurisdiction or check the official guidance from your local financial regulator.
Sources
These are the primary references this glossary is built on. They are maintained by government agencies and financial regulators.