Do you mean the application fee for the visa itself, or the increase in the income needed to meet financial requirement?
If you mean the financial requirement increase (from £18,600 to £29,000), then he won’t be affected by that as it only applies to people applying for their initial visa… and because he applied for his first visa under the lower income requirement and is now extending that visa, he still comes under the previous rules and only needs to show £18,600 income.
If you mean the application fee for the visa, there’s no leeway on that - he has to pay whatever the application fee is at the time he applies.
For FLR(M), the current fees are:
£1,048 visa fee
£2,587.50 IHS surcharge
Super Priority (if using) £1,000
For ILR, the current fees are:
£2,885 visa fee
Super Priority (if using) £1,000
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