Become A Personal Credit Management Guruback
Only the credit/service provider with whom you applied for credit can tell you why your application was declined. The credit/service provider must provide you, in writing, with the reason why your application was declined. If the reason is due to an adverse report from the credit bureau, (that is, an adverse listing on your credit report), the credit/service provider must supply you with all the necessary contact details of the credit bureau.
Each credit/service provider sets their own credit assessment criteria and these will differ from company to company and product to product. They measure your affordability by comparing your income and expenses. Over and above the credit report, they measure your affordability by comparing your income vs expenses, information supplied by the applicant (you) regarding employment details, number of years at current residence, if the applicant (you) owns a home, number of dependants, etc.