SIPP Drawdown calculator
SIPP Drawdown calculator
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Discussion

cliffords

Original Poster:

3,683 posts

47 months

Monday 17th November 2025
quotequote all
I may have put the wrong description .
When I see my FA he shows me when my money will run out versus inflation and current returns . Seems as though he can make it say anything you want .

I am sure it has been asked on here before but I would like to do my own analysis .
Is there a tool I can download ? One you use ?

I put in my current fund value , add a performance assumption and inflation number . My age and current amount I drawdown and it says fine go first class ,or your in trouble , start collecting firewood in the woods and turn the heating off smile

bad company

21,441 posts

290 months

Monday 17th November 2025
quotequote all
The standard traditional drawdown was/is 4%. That should be covered by the ‘natural yield’ from your holdings thus preserving the value of the fund.

In the past I’ve stuck at 3.6% but getting older now so will be increasing to 4%.

cliffords

Original Poster:

3,683 posts

47 months

Monday 17th November 2025
quotequote all
Yes . Please don't take offence but I am after a calculator to do various assumptions.
Preserving the fund is now less of an aim since the government tax changes have so strongly disabled the benefits of passing it on when dead .

Claret m

173 posts

93 months

Monday 17th November 2025
quotequote all
Rather simple calculator here. The interesting thing is the effect of different holdings have on the chance of running out of money.

https://www.2020financial.co.uk/pension-drawdown-c...

Sheepshanks

39,373 posts

143 months

Monday 17th November 2025
quotequote all
Claret m said:
Rather simple calculator here. The interesting thing is the effect of different holdings have on the chance of running out of money.
I like that - shows there's some kind of possibility I might die with £96M! smile

My IFA did a review the other day and that had £16M as the extreme possibility.

LordGrover

34,077 posts

236 months

Monday 17th November 2025
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Not exactly what you're after, but maybe give you a good guiide: Pension Calculator.

eyebeebe

3,668 posts

257 months

Monday 17th November 2025
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www.firecalc.com is quite straightforward and customisable. It will run Monte Carlo simulations based on your input parameters or on historical sequences of returns (sadly using US markets).

I use it to stress test my spreadsheet planning for sequence risk, where on average I assume returns in both accumulation and decumulation of inflation +3%

supersport

4,558 posts

251 months

Monday 17th November 2025
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Have a look at Early Retirement Now. He has a really comprehensive spreadsheet that lets you work in other incomes like state pension etc and it contains historical data to do stress testing.

https://earlyretirementnow.com/safe-withdrawal-rat...

Scroll,down to the “Calculate you own safe withdraw, rate for a,one to the google sheets. You can actually down load them locally.

Somebody

1,685 posts

107 months

Tuesday 18th November 2025
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guiide.co.uk

mike9009

9,721 posts

267 months

Wednesday 19th November 2025
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I use this as a guide....

Although I am using it to calculate what my pot will be at various times and scenarios, but you can use it for withdrawals too....

https://www.thecalculatorsite.com/finance/calculat...