Assumable Mortgage vs. Buying Down Your Interest Rate in 2026
Buyers today face a real question: if you can't find an assumable mortgage, does buying down your rate with points get you to the same place? The short answer is no, and the math explains why.
Here is a direct comparison so you can make the right call.
What Each Option Actually Costs
Assumable mortgage scenario:
- Home price: $400,000
- Assumed loan balance: $310,000 at 3.25%
- Down payment + equity gap: $90,000 (paid to seller or financed with a second)
- Monthly principal and interest: $1,349
New loan with rate buydown scenario:
- Home price: $400,000
- Loan amount: $360,000 at 7.5% (20% down)
- Buying rate down to 6.5% costs roughly 2 points = $7,200 upfront
- Monthly principal and interest: $2,275
Monthly difference: $926 per month. That is $11,112 per year.
The Break-Even on Points Never Works
Buying down a rate with points is not a bad idea on its own. But when the comparison is a 3.25% assumed loan vs. a bought-down 6.5% loan, you are not breaking even in any reasonable timeframe.
To recover $7,200 in points at $926/month savings advantage for the assumed loan: you never recover it. The assumed loan wins by $926 every single month indefinitely.
Even if you compare a smaller rate spread:
- New loan at 7.5% bought down to 7.0%: costs about 1 point = $3,600
- Monthly savings from that buydown: roughly $95/month
- Break-even: 38 months (about 3 years)
At 3 years you have just recovered your buydown cost. Meanwhile, the assumable mortgage has already saved you over $33,000 in that same period.
When Buying Down Points Makes Sense
Points work well when:
- You plan to stay in the home more than 5-7 years
- The rate difference is meaningful (at least 0.5%)
- You are close to a payment threshold that affects your DTI for qualification
- Seller concessions can be used to pay points (lowering your out-of-pocket)
Points do not work when an assumable loan is available in the same price range. The permanent rate difference is too large.
The Equity Gap Problem Is Real, But Solvable
The biggest objection to assumable mortgages: the equity gap. If a seller has $90,000 in equity, you need to cover that outside the assumed loan. Options include:
- Second mortgage: Some lenders offer second mortgages specifically for assumption equity gaps. Rates are higher (often 8-10%), but you are still ahead because the first loan is at 3.25%.
- Seller carryback: Seller holds a second note at agreed terms. Less common but possible.
- Larger down payment: If you have the cash, simply bring more to closing.
Even with an 8.5% second on the equity gap, your blended rate on the full purchase is often 5-5.5%, which still beats a 7.5% new origination.
Colorado-Specific Numbers (2026)
In Colorado, the average assumable mortgage on the market right now carries a rate between 2.75% and 4.25%. The current market rate for a 30-year conventional loan is around 7.25-7.75%.
That spread means:
- On a $300,000 assumed balance, monthly P&I is $1,305 at 3.5% vs. $2,048 at 7.5%
- Annual savings: $8,916
- Over 5 years: $44,580 in payment savings alone (before equity appreciation)
No buydown gets you there. You would need to buy a rate down from 7.5% to 3.5% — that is 16 points, or roughly $48,000 on a $300,000 loan.
What You Should Do
If you find a home with an assumable mortgage at below-market rates, prioritize it. The payment savings are real and permanent for the life of the loan.
If no assumable option is available in your target market or price range:
- Ask your agent to search specifically for VA and FHA listings
- Check assumablemortgage.com and similar aggregators
- Consider a slightly different neighborhood or price point where assumable inventory exists
If you genuinely cannot find an assumable mortgage, then points can be worth considering — especially if the seller is offering concessions that can cover the buydown cost.
But do not let a buyer's agent talk you into paying points when an assumable mortgage exists. The math is not close.
Work With Someone Who Knows Assumptions
Most real estate agents and lenders have never closed an assumable mortgage. The process is different — servicer approval, longer timelines (45-90 days), different documentation. You need someone who has done it.
Learn how the assumption process works before you make an offer.
Check the pre-approval checklist so you know what documents the servicer will require.
If you are in Colorado and want to talk through whether an assumable mortgage makes sense for your situation, reach out directly.