Elegran The equity release market can be dangerous with plenty of evidence that people who call themselves financial advisors are salespeople working on commission, incentivised to push people to borrow more than necessary to meet their current needs
At age 90, one can usually borrow up to 55% on a lifetime mortgage - less if considered “medically enhanced”.
In theory, as your relative is in good health, she could borrow £82,500. Over ten years the debt would rise to £140,922 - see chart one. She could invest the £82,500 but in anything safe she would never earn as much interest as the debt she would be accumulating.
She would be better with a draw down plan that lets her take cash from her home as and when she needs it rather than in a single lump sum. That way she would only pay interest on the cash she’s taken. These plans are more cost-effective as the compound interest grows at a slower pace.
I believe, the minimum amount that someone can take up-front is usually £10,000, and the amount in reserve is often up to the maximum available. The minimum amount someone can draw on in future is usually £2,000 at a time.
With that in mind, chart two assumes she borrows an initial £10,000 and then another £2,000 in year three and every second year after. She borrows £18,000 over ten years and owes £27,612.
It’s quite easy to put these numbers into a spreadsheet. Once the inital formulae are set, you can play with the possibilities e.g say she needs to draw down more in year five to adapt her home - see chart three. She borrows £26,000 over ten years and owes £38,643.
If, by age 100, she needs to be in residential care, there will still be plenty of equity left in her home to self-fund.
I hope that helps.