banks require customers who apply for bank real estate loans to provide tax payment certificates, which is a way to examine customers' personal credit. If they can't provide tax payment certificates, they can also provide other credit certificates, for example, proof of running water in bank accounts for at least half a year, and such information is also acceptable. In addition, the tax payment certificate is a kind of certificate that can prove your credit, but it is not necessary to apply for a bank real estate loan, so it is better if you have a tax payment certificate, but you can't apply if you don't.