Often, yes. But the key is that income isn't the only thing that comes along.

Adding someone combines their income and assets with yours, improving your DTI and potentially putting a loan amount within reach that wasn't before. It also brings every one of their debts into the calculation. And pricing and qualification generally run off the lowest representative credit score across all borrowers.

So adding someone with a high income but heavy debt can produce a net negative. Conversely, someone with a modest income, no debt, and clean credit may help considerably more. Only running the actual documents tells you which case you're in.

The form matters too. A co-borrower goes on both the note and the title, brings income and debts into underwriting, and shares responsibility for repayment. A parent joining a child's loan without living in the home falls into this category. Someone added to title only is a different arrangement — their income isn't considered, so it doesn't help you qualify. Whether you're after a higher approval amount or shared ownership decides which applies.

Anyone added is a borrower, which means income, asset, and residency documentation at the same level as the primary borrower. If they're overseas, build in extra time. And make sure they understand the legal obligation is identical — a late payment lands on their credit as well as yours.

What people miss most is what comes later. A co-borrower on the note can't simply be removed. Taking a name off requires a new refinance, and the person remaining has to qualify alone — so if their income falls short, the name stays. "We'll take them off once my income goes up" is an assumption, not a plan. We look at who to add, in what form, and whether that structure still works several years out.