Bear in mind that, like debt-to-income ratio, RI is a non-negotiable criterion for exclusion from the application process. In other words, if you don’t meet the RI standards for your area, you won’t necessarily be denied the loan—but you do stand a high chance at having your application rejected. Furthermore, DTI and RI are in direct correlation. If your DTI is 41% or higher, your RI requirement would be 20% higher. You should always check out a mortgage calculator (there’s plenty of good ones online), before applying for any type of mortgage—even a safe one, as VA mortgages usually are.
Residual income is calculated as net income less a charge for the cost of capital. The charge is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. Given the opportunity cost of equity, a company can have positive net income but negative residual income.