Americans buy homes as investments, so they do not make themselves house slaves just to own a home.

Families look more at their financial ability and the impact of their debt load on their normal lives when buying a home, so Americans generally follow several principles when buying a home.

First, when deciding if they can afford to buy a home, there is a golden rule of 28%, which means that a family's monthly mortgage payments should not exceed 28% of their gross monthly income.

For example, for a family with an annual income of $80,000, they should not spend more than $1,866 per month on home loan repayments.

Second, a family's total monthly spending on housing should not exceed 32% of their gross monthly income, or the 32% rule.

Total housing expenses include home loans, homeowner's insurance, community fees and real estate taxes.

For example, a family with an annual income of $80,000 should not spend more than $2,133 per month on housing.

Third, a household's monthly debt should not exceed 40% of its gross monthly income, which is known as the 40% rule.

In addition to housing loans, household debt includes household credit card loans, auto loans, and loans for student education expenses.

For example, for a family with an annual income of $80,000, their monthly debt should not exceed $2,664.

If a family is paying $2,133 per month on their mortgage, other debts should not exceed $531.

If other debts are too high, the home loan payments will have to be reduced.

At this point, I'm afraid that one would have to consider buying a slightly less expensive home.

Because the three laws listed above are the most basic review criteria for U.S. banks when reviewing the financial situation of home loan borrowers, if these criteria are exceeded too much, the bank will not approve the applicant's home loan request.