Numbers that
make sense.
Finance, investment, and planning calculations — explained and demystified.
✦ AI-powered — understands natural language
Why Salary Sacrifice Beats a Regular Pension Contribution — NI Savings, Employer Passthrough, and the £100,000 Taper
UK Pension vs US 401(k) vs Australian Superannuation: How Different Retirement Systems Work
The UK State Pension provides ~£11,500/year, US Social Security ~$22,800/year, and Australian super mandates 11.5% employer contributions. Here's how each system works, what the state provides vs what you must build yourself, and what the funding gap means for your personal savings obligation.
Statistics in the News: Why Relative Risk, Poll Margins of Error, and Chart Scales Often Mislead
A "50% reduction in heart attack risk" sounds dramatic; the absolute change might be 1 percentage point. A poll lead of 2% within a ±3% margin of error isn't a lead at all. Here's how relative vs absolute risk misleads in health news, what poll margins of error actually mean, and how to spot misleading charts.
Percentages in Everyday Finance: VAT Calculations, Markup vs Margin, and the Common Mistakes That Cost Money
Percentage and percentage point are not the same thing — a rate moving from 4% to 6% is a 2-percentage-point rise OR a 50% increase. Here's this distinction, the correct way to remove VAT from a price, the markup vs margin confusion that costs businesses, and why a 50% loss requires a 100% gain to recover.
Debt Consolidation: When It Saves Money, When It Backfires, and the Alternatives
Debt consolidation saves thousands when it works — and doubles your debt when it doesn't. The math is sound; the behaviour is the problem. Here's when consolidation genuinely saves money, the most common failure mode (rebuilding original debts), debt avalanche vs snowball alternatives, and how 0% balance transfer cards offer free consolidation.
Loan Types Explained: Secured vs Unsecured, Flat Rate Traps, and How to Compare Borrowing Costs
Personal loans, home loans, car finance, and payday loans all differ in structure — not just rate. Here's how secured vs unsecured affects rates, the flat-rate vs reducing-balance deception (flat 10% = effective 18% APR), and a loan comparison framework that goes beyond rate.
How Central Banks Target Inflation: The 2% Target, Interest Rate Transmission, and CPI vs RPI
Central banks target 2% inflation — not because it's optimal, but because zero is dangerous. Here's why the 2% target emerged from New Zealand in 1989, how raising interest rates reduces inflation (with an 18-month lag), why CPI and RPI give different numbers, and what actually causes hyperinflation.
Mortgages Explained: Amortisation, LTV, Fixed vs Variable Rates, and the Power of Overpayments
The EMI calculator gives a monthly payment — but total interest, LTV impact on rate, fixed vs tracker mortgages, and the overpayment calculation are what determine whether a mortgage is actually affordable over 25 years. Here's how mortgage amortisation works with real numbers.
Compound Interest Working Against You: Credit Card Debt, Minimum Payments, and the Real Cost of Borrowing
Compound interest works as powerfully against you in credit card debt as it works for you in savings. Here's how daily compounding works on credit cards, the mathematics of minimum payment traps, how mortgage interest front-loads early payments, and the dramatic savings from overpaying.
The Rule of 72: The Fastest Way to Estimate Compound Interest Without a Calculator
Divide 72 by the interest rate and you get the approximate years for money to double. At 8%, that's 9 years. At 6% inflation, your purchasing power halves in 12 years. The Rule of 72 is the fastest compound interest mental shortcut — here's how it works, why it's accurate, and how to extend it to tripling, quadrupling, and GDP growth.
SIP vs Lump Sum Investing: What the Evidence Shows and Why Staying Invested Beats Everything Else
Lump sum beats SIP 67% of the time theoretically — and SIPs almost always win in practice, because most people don't have a lump sum, and those who do often never invest it. Here's what the research shows, the cost of missing the market's best days, and what a 15-year SIP actually produces.
Recurring Deposits vs SIPs vs Savings Accounts: Risk, Returns, and Which Suits Your Goal
RDs guarantee returns; SIPs offer higher potential returns with market risk; regular savings accounts provide full liquidity. Here's a comparison of all three by risk, return, tax treatment, and suitable horizon — including why rupee cost averaging makes SIPs particularly effective in volatile markets.
Goal-Based Savings Planning: How to Set Realistic Targets for Emergency Funds, Deposits, and Education
Most savings goals fail because the monthly target was calculated wrong — no inflation adjustment, no allowance for rising house prices, wrong timeline. Here's goal-based financial planning in practice: emergency fund sizing, inflation-adjusted targets, house deposit calculation with rising prices, and education fund planning.
