FHA has mortgage structures designed around expected future income growth.
Section 245(a) historically provides FHA insurance for graduated-payment and growing-equity mortgage structures. These are specialized products and actual lender availability can be limited.
Graduated Payment Mortgage
A GPM begins with lower scheduled payments that increase according to the approved structure. The concept is aimed at borrowers whose income is reasonably expected to rise.
Growing Equity Mortgage
A GEM uses scheduled payment increases to accelerate principal reduction rather than simply extending amortization. The borrower must understand the future payment schedule from the outset.
Official program sources
Primary sources are HUD/FHA program pages and Handbook 4000.1. Program availability and lender participation can be narrower than statutory eligibility, so a program's existence does not mean every FHA lender offers it.