Couldn’t agree more with your approach. I remember when I refinanced last year, the lender’s “approved” number was honestly laughable compared to what I was actually comfortable with. It’s wild how they don’t factor in the random stuff—like, my roof decided to leak right after closing. Your buffer idea is spot on. It’s easy to get caught up in what the bank says you can handle, but real life doesn’t care about their spreadsheet. You’re definitely doing it right by trusting your own math.
Not Always About the Bank’s Math
I get where you’re coming from—banks can definitely approve folks for way more than feels comfortable. But, I’d actually push back a bit on the idea that their numbers are totally out of touch with reality. There’s a reason they use DTI (debt-to-income) as a baseline, even if it feels disconnected from “real life” sometimes.
Here’s the thing: lenders have to standardize risk somehow, and DTI is one of the few ways they can do it across the board. It isn’t perfect, but it does protect buyers from getting in way over their heads. That said, I’ve seen plenty of people get denied for high DTI—even when they had big savings or side gigs that didn’t count as income on paper. Sometimes, it’s not about what you know you can afford, but what the underwriter can justify to their boss (and the secondary market).
But I wouldn’t say banks ignore “random stuff” entirely. Some lenders do ask about reserves, or want to see you’ve got a cushion for emergencies (like your leaky roof). Not every program does, but it’s becoming more common, especially after 2008. I’ve had clients who got better terms because they had a few months’ worth of expenses in the bank.
One thing I always tell people: don’t just look at the monthly payment. Factor in property taxes, insurance, utilities, and then throw in a buffer for repairs or surprises. And honestly, sometimes the bank’s “approved” amount is just a ceiling—not a target. It’s totally fine (smart, even) to borrow less.
But I wouldn’t go so far as to say the bank’s spreadsheet is useless. It’s more like…a starting point. Your own math should always come first, but don’t ignore the lender’s reasoning either. They’ve seen a lot of people get in trouble by stretching too far.
Funny story—had a client who was approved for a huge mortgage, but he insisted on buying way under his limit. Two years later, he lost his job for a few months and was super grateful he hadn’t maxed out. The system isn’t perfect, but sometimes it gets things right.
Just my two cents—sometimes the “laughable” number is there for a reason, even if it doesn’t fit every situation.
DTI isn’t the only thing that matters, but it’s a biggie. I always tell folks: treat the bank’s number as a “max speed limit,” not a goal. I’ve seen people get creative with side gigs or rental income, but if it’s not on paper, underwriters usually won’t care. Personally, I never get close to my max approval—life throws curveballs, and you want some breathing room for those “whoops” moments.
DTI isn’t the only thing that matters, but it’s a biggie. I always tell folks: treat the bank’s number as a “max speed limit,” not a goal.
Not sure I totally agree here—sometimes lenders will look at compensating factors even if your DTI is a bit high. Stuff like a big down payment, strong credit, or a lot of cash reserves can tip things in your favor. It’s not always a hard cutoff.
I get where you’re coming from, but I’ve actually been through a refi where my DTI was a hair over the “limit” and the lender still approved me. They grilled me on my savings and wanted to see a few months of reserves, but it wasn’t an automatic no. I think a lot of people get spooked by the DTI number and assume it’s a brick wall, but in reality, it’s more like a warning sign. If you’ve got a solid credit score or you’re putting down a chunk of cash, some lenders will work with you.
That said, I wouldn’t bank on it if your DTI is way out of range. There’s definitely more wiggle room than people think, though. It’s not always black and white—sometimes it’s just about finding the right lender who’s willing to look at the bigger picture.