I sat across from a young couple last week who’d been pre-approved by their bank for a 30-year mortgage at 6%. They were proud—and honestly, getting approved is an accomplishment. But when I asked if they’d considered a 15-year loan, they looked at me like I’d suggested buying the house with cash.
“We surely could not afford a 15-year payment,” they said.
Here’s the deal: Too many people don’t even evaluate the 15 year option, and it’s costing them hundreds of thousands of dollars.
Can you afford the payment and save big?
First make sure you have a handle on the math.
Let me break this down with real numbers. This table below shows the payment comparisons for 15 and 30 year fixed rate loans from $100,000 to $1,000,000. The payment factor is 1.35. Simply multiply any 30 year P&I payment by 1.35 to get the approximate 15 Year P&I Payment:
We are currently offering 15 Year fixed at about 5.00% APR and 30 Year fixed at about 5.80% APR to our best qualified borrowers. (Rates change daily and depend on your specific credit profile. Not a commitment to lend.)
| Loan Amount | 30 Year Fxd Pmt | Factor | 15 Year Fxd Pmt |
|---|---|---|---|
| $100,000 | $586.75 | 1.35 | $792.12 |
| $200,000 | $1,173.51 | 1.35 | $1,584.23 |
| $300,000 | $1,760.26 | 1.35 | $2,376.35 |
| $400,000 | $2,347.01 | 1.35 | $3,168.47 |
| $500,000 | $2,933.77 | 1.35 | $3,960.58 |
| $600,000 | $3,520.52 | 1.35 | $4,752.70 |
| $700,000 | $4,107.27 | 1.35 | $5,544.82 |
| $800,000 | $4,694.02 | 1.35 | $6,336.93 |
| $900,000 | $5,280.78 | 1.35 | $7,129.05 |
| $1,000,000 | $5,867.53 | 1.35 | $7,921.17 |
For a $400,000 loan for example, the monthly payment is about $821/month higher with a 15 year loan. But you save over $275,000 in interest over the life of the loan. Check out your savings at different points in the table below:
| End of Year | Interest Saved |
|---|---|
| 5 | $24,087 |
| 7 | $38,847 |
| 10 | $67,379 |
| 15 | $134,815 |
| 20 | $207,240 |
| 30 | $275,553 |
Read that again. Two hundred and seventy-five thousand dollars.
Here’s What Most People Don’t Realize
After 25 years in this business, I’ve watched clients choose the “safer” 30-year option over and over. I get it—the lower payment feels more comfortable. But here’s the real talk: that comfort comes with an enormous price tag.
The 15-year mortgage gives you:
- A lower interest rate. Usually 0.5% to 0.90% less than the 30-year. Lenders reward you for taking less risk.
- Forced equity building. You’re paying down principal aggressively from day one, not just feeding the interest machine.
- Freedom in half the time. Imagine being mortgage-free at 50 instead of 65. That’s a completely different retirement picture.
- Less total risk. You owe less, faster. If life throws you a curveball, you’ve got more equity to work with.
The Payment Reality Check
Bottom line: Yes, $821 more per month is real money. But let’s look at what you’re actually getting.
That extra $821 isn’t disappearing—it’s building your equity at warp speed. On a 30-year loan, your first payment sends maybe $1,328 to principal. On the 15-year? You’re putting $1,822 toward principal right out of the gate.
When It Makes Perfect Sense
The 15-year mortgage is a tremendous value if you:
- Have stable income you can count on
- Want to build wealth through equity, not just hope for appreciation
- Are in your peak earning years (40s-50s typically)
- Plan to stay in the home long-term
- Value being debt-free over keeping monthly payments low
When the 30-Year Makes More Sense
Look, I’m not here to sell you something that doesn’t fit. There are absolutely times when the 30-year is the right call:
- You’re stretching to buy in a competitive market and need the lower payment
- You’re early in your career with income expected to grow substantially
- You’ve got other high-interest debt to tackle first
- You’re investing heavily in retirement accounts and maxing out tax-advantaged options
- The payment difference genuinely strains your monthly budget
But here’s my challenge: Don’t just assume you can’t afford the 15-year. Run the actual numbers. Look at your budget honestly. You might surprise yourself.
If you want to run the numbers on your specific situation—whether you’re buying, refinancing, or just exploring options—let’s talk. No sales pitch, just straight intel on what makes sense for your circumstances.
Call or email me anytime for additional numbers or details.
Robert Musseman
703-309-2537
robm@oakstreet.coregrowthexperts.com
Senior Loan Officer, Oak Street Mortgage
NMLS ID# 85152 | Company NMLS ID# 1618618
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