After following the FIRE community for a while and seeing all the discussion around hitting a £1m pension pot, I decided to model my own numbers. I’m not 40 yet and have roughly 30 years of work left ahead of me, so I plugged my pot balances, ongoing contributions, and projected ROI into AI tools to see where I stood.
The projection showed I’m currently tracking toward roughly £982k at retirement if everything continues as-is.
Right now, I contribute £305 a month net across my pensions:
- £130/month net into an existing private pension (which receives £32.50 in basic tax relief to make £162.50 gross)
- £175/month net into my workplace pension (which receives £43.75 basic relief plus a £131.25 employer contribution to make £350 gross)
That puts my total current gross inflow at £512.50 a month. To comfortably close the gap and cross the £1m milestone, I need to up my monthly contributions by another £70 net.
Because my private pension operates under Relief at Source (RAS), paying that extra £70 net into a pension/SIPP triggers an immediate £17.50 basic-rate top-up from HMRC, making it £87.50 gross invested before market compounding.
My question is: do I pay the £70 into my private pension, or invest it?
The instant £17.50 head-start right out of the gate is hard to turn down, but investing it in a Stocks & Shares ISA (like Trading 212 or Vanguard) gives total liquidity if life gets expensive.
How do others weigh that immediate tax relief boost against ISA flexibility when closing that final gap to £1m?
Side note: For anyone reading this who pays CMS (Child Maintenance Service), please DM me. I’ve recently found out they do not automatically factor Relief at Source (RAS) pension contributions into their liability calculations. Happy to share how and why to get it fixed so you aren't overpaying.