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Affordability

Can someone please explain how mortgage lenders assess affordability?
From what I can gather, the proposed mortgage repayments + monthly essential costs (i.e. committed spend) should be less than 40% of net monthly income (after tax). Then with a stress test (3% increase in mortgage interest rate) the above proportion should be less than 45-50% of net monthly income.

Can someone confirm if this is generally correct?
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100% debt-free!

Comments

  • LRmortgage
    LRmortgage Posts: 484 Forumite
    Fifth Anniversary 100 Posts Name Dropper
    Each lender had their own affordability model. A guide is roughly 4.5 x your income. 
    If you want to be more accurate either see a broker or go onto some lender websites and enter your details accurately into their affordability calculators. 
    I am a Mortgage Adviser
    You should note that this site doesn't check my status as a mortgage adviser, so you need to take my word for it. This signature is here as I follow MSE's Mortgage Adviser Code of Conduct. Any posts on here are for information and discussion purposes only and shouldn't be seen as financial advice.
  • Saga
    Saga Posts: 303 Forumite
    Part of the Furniture 100 Posts Name Dropper
    edited 10 March 2020 at 9:35AM
    The AIPs from lenders' websites all seem to suggest they will lend a lot more (4.45x) than estimated by the Money Advice Service affordability calculator (3.5x).  Who to believe?  I don't want to be led into a false belief that lenders will give more than reality and have a mortgage application rejected.
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    100% debt-free!
  • Err Lenders rather than Money Advice Service! And yes, it can vary between all different providers depending on how the calculate certain costs and their appetite for business
    I am a mortgage broker and IFA. You should note that this site doesn't check my status as a Mortgage Adviser, so you need to take my word for it. This signature is here as I follow MSE's Mortgage Adviser Code of Conduct. Any posts on here are for information and discussion purposes only and shouldn't be seen as financial advice
  • Thrugelmir
    Thrugelmir Posts: 89,546 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    edited 10 March 2020 at 2:58PM
    Stress tests are based on the lenders SVR plus a margin nearer 2%-3%. Not a 3% increase on "current" mortgage rate. The PRC works on the basis of  a return to normality at some point in the future. Where BOE base rate will be nearer 3.5-5%.    
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