Topic

Compounding

The single mathematical idea that does most of the work in long-term wealth building. The articles below are about preserving and accelerating it.

Compounding is the maths that converts ordinary saving into life-changing wealth. £300 a month at a 7% real return for thirty years becomes £350,000. Stretch that to forty years and it's £750,000. The same £300 a month at 5% real (which is closer to a realistic post-fee global tracker assumption) is £270,000 after thirty years. The gap between those numbers is what fees, taxes, and behaviour do to your eventual pot.

These articles cover what shapes the curve. Stealth Taxes UK covers how the British tax system quietly eats compounding through fiscal drag and frozen thresholds. Junior ISA UK covers the wrapper that compounds for eighteen years on a child's behalf. The Slight Edge covers the habit framework that makes the saving rate possible. What Is a 100-Bagger Stock? is the equity-side equivalent: how individual companies compound over decades.

6 articles

Junior Stocks and Shares ISA: The 18-Year Headstart

Junior Stocks and Shares ISA: The 18-Year Headstart

For an 18-year time horizon, choosing a cash Junior ISA is choosing to lose. The same £100 a month in equities ends up worth roughly £14,000 more by your child's 18th birthday.

Updated 31 May 2026Investing 11 min
Junior ISA UK: The Complete 2026/27 Guide

Junior ISA UK: The Complete 2026/27 Guide

Most British parents open the wrong type of Junior ISA out of habit. By the child's 18th birthday, the default has quietly cost them the price of a small car. The fix is one form.

Updated 26 May 2026Investing 11 min
The Stealth Taxes: How the UK System Kills Your Compounding

The Stealth Taxes: How the UK System Kills Your Compounding

The UK tax tables show 40% at £50k and 45% above £125k. They lie by omission. The real marginal rate hidden between them quietly exceeds 70%, and most earners never see it.

Updated 26 May 2026FIRE 8 min
How War Debt Felled the British Empire

How War Debt Felled the British Empire

Britain entered WWI as the world's creditor and left WWII as its debtor. No rival army did that. Compounding interest did. The same maths runs against you on a credit card.

Updated 26 May 2026Debt Management 6 min
What Is a 100-Bagger Stock? Mayer's Framework (UK)

What Is a 100-Bagger Stock? Mayer's Framework (UK)

The median 100-bagger took 26 years to play out. Almost no retail investor sat through that. Mayer's four traits are easy to spot, and almost impossible to hold to maturity.

Updated 25 May 2026Investing 8 min
The Slight Edge Review: Small Habits, Big Wealth

The Slight Edge Review: Small Habits, Big Wealth

Most people wait for the big break. Jeff Olson argues the big break is a myth, and the tiny daily action you keep dismissing is the only thing that ever moves the number.

Updated 26 May 2026FIRE 6 min