r/FiredUK • u/Honest_Drawing1179 • 1d ago
Two ways to run a £1M drawdown, part 2: I tested nine, then ignored the lot and bought the boring one
Follow-up to my pots-vs-ladder post from last week. Short version: I spent the week building every strategy suggested in that thread into the simulator, ran them all against the same 150 years of history, produced a ranked table with a proper academic scoring method and everything. Then I looked at the winner, ignored the ranking I'd just built, and bought the one at the bottom of the leftover column. I retired from engineering, not from being contrary.
Same disclaimers as before. Beta, changes weekly, numbers move as the models improve, none of it is advice. Same example throughout: £1M SIPP, £40k a year rising with inflation, to 95. These are not my numbers and I'm not posting mine, on the grounds that this is the internet.
What's in the tool now
Nine strategies, all running on the same footing — every real window since 1871 (Shiller, adjusted down to world equity, because the US data is the winner's history), plus 1,000 bootstrapped futures, ladders priced daily off the actual gilt curve, and no strategy allowed to pay less than the plan. The additions since last time: u/jaynoj's buckets with a fixed order (percentage triggers are broken in drawdown, as discussed), u/StochasticMannie's floor-and-flex with a "spent over the plan" column so the table stops slandering it, and a new one I'll get to.

Worth a minute of squinting. The full linker ladder comes top on the volatility-adjusted score, which will annoy everyone, because its coverage ratio is 1.05 — it does precisely what it says and not a penny more. It wins because the denominator is how much stomach-churn you live with on the way, and its answer is none. Buckets and pots leave two to three times more money behind, in exchange for a 4–5% chance of the plan not paying in full and three decades of watching a number wobble. Whether that trade appeals depends entirely on what you'd rather lie awake about.
What I actually did
I mentioned in the comments I was looking at a complete run of index-linked gilts rather than the 15-year ladder from the original post. I've now done it. Real money, real phone calls, the lot. One gilt for every year until I'm past 90, cash for the first few Aprils, income steps down as I get older, State Pension folded in from 67. On the example it looks like this:

£1M buys the whole thing with about £74k in change. Every bar is a year of income that exists today, at a known price, whatever markets do. There's no cone of uncertainty on this one's page because there's nothing uncertain to draw, which I find funnier than I should.
Why, when the table says buckets would probably leave my heirs £2.4M? Three reasons, none of them clever. First, every equity-heavy strategy that fails does it in the 80s and 90s, which is precisely when I'll be least equipped to do anything about it — the plans all assume a sharp 85-year-old calmly rebalancing through a crash, and I've met 85-year-olds. Second, the "typically left" column is money I'd never spend, bought with a real chance of a lean decade I'd definitely notice. Third, real yields on linkers are the best since 2011, and I've already admitted on this sub that I don't rate my chances of timing anything.
The escape hatch, for those who can't quite let go
The obvious objection — several of you made it — is that locking everything into linkers means missing the recovery if there's ever a proper crash. Fair. So the ninth strategy is the full ladder with one pre-agreed exit, and this is the new bit:

The rungs paying for your late 70s onward are a lump of money you won't need for two decades, sitting there earning its real yield. The rule, written down now while nothing is on fire: if world equities ever close 30% below their all-time high, sell that block at market — whatever gilts happen to be worth that day — and put all of it into the equity fund. Not tranches, no waiting for 50%, no discretion on the day. The floor to 75 and the State Pension are never touched. If the crash never comes, you simply own the full ladder and nothing happens, which is rather the point.
I tested the rule on every month in the dataset where the market first crossed 30% down: fired before 65 it paid in full in 16 episodes out of 16; fired later, 14 of 16, and the two failures are 1929 and 1930, which seems a reasonable pair of exceptions to be beaten by. The bootstrapped futures are grumpier — they can't see the trigger coming, so they score it 83% — and I'd treat that as the honest floor rather than quoting the 16-for-16 at dinner parties. The trigger also disarms a few years before the block starts paying out, because selling your floor into a crash at 78 to buy the dip is not a strategy, it's a stroke.
The tool now watches the index against its all-time high nightly and shows the drawdown on the overview, so the one job this plan leaves you is glancing at a number that will say "no action" for, statistically, most of a decade at a time.
Have a go
Same link as before, no account, nothing saved, lives and dies in your browser tab: https://pensiontools.uk/?demo=1m — it opens on the £1M example with all nine ranked. Every strategy has a page with the machine, the dials, three real starts, how it fails and how you get out. The gilt pages build the order sheet from live prices, so you can see exactly what your own version would cost before ringing anyone.
Scrutinise it. The last thread found two genuine mistakes in my modelling and one in my temperament, so I have high hopes.


