Lenders are confident that the new affordability checks, due to be introduced in April next year, won't prevent aspiring homeowners from getting a mortgage.
New reforms as part of the Mortgage Market Review (MMR) will see overall responsibility for checking borrowers' affordability officially pass from independent financial advisers to lenders.
Lenders will also be required to examine whether borrowers can afford their mortgage repayments in the event of interest rate increases as well as being required to verify applicants' income.
Research by the Intermediary Mortgage Lenders' Association (IMLA) revealed that 73% of lenders believe these more stringent reforms will not significantly reduce the number of successful mortgage applications.
Only 7% of lenders expect that significantly more applicants will be turned down for a mortgage.
Yet the research showed that mortgage advisers are less convinced that aspiring borrowers will be unaffected.
Although over a third of brokers do not expect stress tests will significantly reduce the number of successful mortgage applicants (34%), close to half predict that considerably more consumers will find they are turned down (44%).
"The MMR rules on affordability are built on common sense and are not too far removed from how many lenders already approach the issue," said Peter Williams, executive director of IMLA.
"Recent experience has shown how important it is to ensure that mortgage borrowers can reasonably manage their commitments, not just now but in the future."
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