10% down loan and STR loophole - incompatible?

Question

When an owner uses an STR for more than 14 days or 10% of total rented days, the property counts as a personal residence, and you can’t claim losses to offset active income.

At the same time, according to the IRS, “second/vacation homes” can be rented out to generate income as long as you live there for more than 14 days or for more than 10% of rented days.

These statements seem incompatible with one another. Can anyone who has used a second home loan with 10% down and then gone on to use the STR loophole explain how this is possible?

Justin Miller · Answer

These aren’t contradictory, you’re just mixing up lender rules with tax rules.

A 10% down second-home loan is about occupancy/financing.The 14-day / 10% rule is about IRS tax treatment.

So yes, a property can qualify as a second home and be a personal residence for tax purposes. That’s exactly why the “STR loophole” doesn’t magically work just because you got a vacation-home loan.

Andrew Steffens · Answer

Not commenting on the legality of it but I had about 5-10 clients last year purchase on 10% down second home loans and then do the accelerated depreciation. As of now, they have been successful.

John Underwood · Answer

Seems like trying to combine the two would be a good case of mortgage fraud.

Jon Martin · Answer

When I did a 10% down 2nd home loan, there was a rider that said you should use it "some" of the time for personal use. No specific number of days. IIRC that only applies to the first 12 months of the mortgage anyway.

And yes, those 2 statements do seem to contradict each other. I am wondering if maybe you are confusing one of them with the "Augusta" rule, where you are allowed to rent your personal residence for up to 14 days tax free.

Either way, the IRS doesn't write the rules for what a lender can call a 2nd home loan and how that pertains to you have to use it.

Disclaimer: I am not a tax professional or a lawyer.

Ashish Acharya · Answer

Justin’s answer is correct, and yes, the first statement is true. When an owner uses a short-term rental (STR) for more than 14 days or 10% of the total rented days (whichever is greater), it’s generally treated as a second/vacation home. On your second point, you can still generate income, but this is where the STR loophole starts to fall apart. Once you go over those personal use limits, you typically can’t use the losses to offset other income anymore because it falls under vacation home rules.

There are also other requirements you need to meet to properly apply the STR loophole, like material participation (being actively involved in managing the property), which is what allows losses to be treated as non-passive in the first place.

And I saw someone mention the Augusta Rule, that’s a separate strategy. It allows you to rent out your personal residence for up to 14 days per year tax-free (no income reported), as long as it’s rented at fair market value. It’s commonly used by business owners who “rent” their homes to their businesses for meetings or events (very timely with the Master's being this week, which is the event that helped bring it into effect).

So the loan type (10% down second home loan, investment loan, etc.) doesn’t determine the tax treatment. The tax treatment is driven by how the property is actually used and how the activity qualifies under IRS rules.

Hope that all makes sense. If you’re trying to apply these strategies to your own situation, I’d highly recommend working with a CPA who specializes in real estate. There are a lot of moving parts, and the real value comes from applying them correctly and seeing how they all tie into your overall income picture. Happy to connect!

10% down loan and STR loophole - incompatible?

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