Ndubuisi 'Andy' EgwimMoney Coach for Medics|Ex-NHS GP|21+ Yrs Investor| Founder, MoneyWiseDoctor.com|Helping Medics Avoid Big Money Mistakes

The 3 Stages of Tax Every UK Doctor Must Understand Before Investing

18 Apr 2026 · 1 min

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In this brief educational segment, Ndubuisi 'Andy' Egwim explains that any investment is subject to tax at three distinct moments: when money is initially contributed (Stage 1), while it accrues earnings (Stage 2), and when it is withdrawn (Stage 3). He argues that most investors, including UK doctors, only consider the tax consequences at withdrawal, leading them to favor ISAs because they are tax‑free on exit, while overlooking the tax impact at the contribution stage. Andy contrasts ISAs with Self‑Invested Pensions (SIP), highlighting that ignoring the upfront tax cost can result in costly mistakes. He promises to walk through all three stages for both vehicles to give a complete picture of tax efficiency.

Chapters

When you invest money, any money at all, in any vehicle, there are 3 moments when tax can touch it. Stage 1, putting the money in. Stage 2, while it grows. And Stage 3, taking the money out. Obviously, more tax, less return. Most people only think about Stage 3. They say the ISA is tax-free on the way out, the pension is taxed when you draw it, therefore ISAs are better. And this is where many people miss it. Without even checking. Stage 3 is only part of the story. Ignoring Stage 1 is exactly where the costly mistakes are made. Let me walk you through all the 3 stages with both vehicles, ISAS versus SIP.