Mortgage Rates Just Jumped 15 bps. Here's What It Costs You on a $300K Atlanta Deal.

by Joshua Boyd

Hey Atlanta investor,

Last Monday I sat down to underwrite a $315,000 SFR in South Fulton. The model showed it cash-flowing on a 6.36% investor rate.

This Monday — same property, same rent, same expenses — the rate I got quoted was 6.51%.

That's a 15 basis point jump in one week. On a $250K investor loan, that's an extra $25/month. On a $300K loan, ~$30/month, or about $360 a year, gone, straight off your cash-flow line.

It's not catastrophic. It IS the kind of move that turns a marginal deal into a no-deal — and forces the discipline I've been writing about all month.

What happened

The 10-year Treasury jumped more than 20 bps last week on the back of two hot inflation prints (CPI and PPI) and energy-price noise tied to the Iran conflict. Mortgage rates ride the 10-year. When the 10-year sneezes, your DSCR loan catches a cold.

Quick context on where things stand right now (May 21, 2026):

30-year conventional fixed: 6.51% (was 6.36% the week prior)
A year ago: 6.86% — so we're still lower YoY, but the direction this month is up, not down
DSCR / investor loans: ~6.125%–7.5% fixed, ~5.125%–6.125% on ARM products, depending on FICO, LTV, and DSCR coverage
Bond-market read on the 5-handle hope: further out than it looked in April

What it costs you on an Atlanta deal — in real dollars

Loan size	+15 bps / month	+15 bps / year
$250,000	+$25	+$300
$300,000	+$30	+$360
$500,000 (small multi)	+$50	+$600
$1,000,000	+$100	+$1,200

Now combine that with the trend I wrote about last week — Atlanta listings at a 7-year high, pendings down 21.8% YoY, DOM stretching. The rate move doesn't change the buyer-leverage thesis. It tightens the screws on YOUR side of the transaction.

What I'm doing this week — 4 moves

1) Seller-funded rate buy-down ASK on every offer.
2-1 buy-down or a permanent 50–75 bps reduction, paid out of seller proceeds. In a market with 4+ months of supply and pendings off 22%, this is a normal ask, not an aggressive one. The cost to the seller of carrying the listing 30 more days is almost always greater than the buy-down concession.

2) Re-quote DSCR and conventional side-by-side on every deal.
DSCR rates are clustering 6.125%–7.5% — the spread to conventional has narrowed in 2026. On rentals where conventional DTI is tight, DSCR is often the better product right now. Don't default to one lender out of habit.

3) Lock the rate, but lock it short.
30- and 45-day locks are cheap right now relative to where the 10-year could go if the CPI keeps printing hot. Float-down options if your lender offers one. Avoid 60+ day locks unless you absolutely need the time.

4) Re-underwrite EVERY deal at 6.75% as the stress-test rate.
Not because that's where rates are — but because if the 10-year keeps drifting, that's where they could be when you close. If the deal works at 6.75%, you have margin. If it only works at 6.36%, you don't.

And one operations move that has nothing to do with rates

This Thursday (May 28) at the Dealmaker Atlanta meetup, we're spending the whole night on the cost-side surprise that quietly kills suburban Atlanta deals: septic systems.

How to read a real septic inspection. Drainfield life-cycle. The 4 maintenance plays that add 10+ years to the system. How to price septic risk into your offer without losing the deal. We'll workshop live deals on the whiteboard.

📍 Line Creek Bus Barn — Fayetteville, GA
🕔 Thursday May 28 — 6:15 PM
🍕 Free. Pizza on us.

Bring a deal, bring a question, bring a friend. If you've been on the fence about coming to one of these, this is the one. Septic gets ignored until it costs someone $25K. Don't be that someone.

Bottom line

Rates moved against you this week. They're not going to single-handedly break your portfolio, but they ARE the latest reminder that 2021's playbook isn't going to work in 2026. The investors who quietly compound through this environment are the ones who treat every line item — rate, insurance, septic, vacancy, reserves — like it deserves a re-quote, not an assumption.

Build wealth. Build community. Build Atlanta.

— Josh
Dealmaker Atlanta