I knew it wouldn't be straightforward.
Hadn't planned on thinking about this but...
For a shortcut just figure out if
equity after sale + (4 x (salary - debt payments)) >= (new house price + new house price x 7%)
The 7% is a kludge for stamp duty and other fees
@Tenderloin started
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I knew it wouldn't be straightforward.
Hadn't planned on thinking about this but...