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Rent out your house or sell it? Check the three-year tax clock first

The short answer

Compare the monthly cash flow from renting with the cash in hand from selling. Then check the tax clock: if you lived there two of the last five years, up to $250,000 of profit ($500,000 for most married couples) can be tax-free, and renting it out for more than three years can end that.

You’re moving, you own the house, and you like the rate on your mortgage, so renting it out instead of selling is tempting.

The example here is a house worth $350,000, with $180,000 left on a 3.25% mortgage that has 20 years to go. It would rent for $2,300 a month.

What would renting it out earn each month?

Start with the rent, then take out every cost of being a landlord, not only the mortgage.

Keep it and rent it out
Each month
Rent$2,300
Mortgage you already have−$1,021
Property taxes−$292
Landlord insurance−$133
Empty months, repairs and big repairs (15% of rent)−$345
Property management (10% of rent)−$230
Cash flow each month+$279

$279 a month is positive but thin. One empty month or one new water heater can wipe out several months of it. Your low rate is doing a lot of the work.

What would selling it put in your pocket?

Sell it now
One time
Sale price$350,000
Selling costs (7%)−$24,500
Mortgage payoff−$180,000
Cash in hand before taxes+$145,500

If you qualify for the home sale exclusion below, the profit on a sale like this may not be taxed at all.

What is the three-year tax clock?

If you owned the house and lived in it as your main home for at least two of the five years before you sell, you can usually leave up to $250,000 of your profit out of your federal taxable income, or $500,000 for most married couples filing jointly. The IRS explains the rule in Publication 523.

Those five years are counted back from the day you sell. So if you lived in the house for at least two years before moving out, you can rent it out for up to three years and still qualify when you sell. Rent it out for longer than that, and the profit from the sale can become taxable.

Two more things to know:

  • Depreciation comes back when you sell. While the house is a rental, the tax rules let you deduct depreciation each year, an allowance for the building wearing out. When you sell, the part of your profit equal to the depreciation you took, or could have taken, can’t be left out, even if the rest can.
  • There are exceptions. A move for work, health or certain other reasons can qualify for a partial exclusion. A tax professional can tell you where you stand.

So, rent it out or sell it?

Put the two side by side, then answer two questions:

  1. Does renting still work if a month sits empty or something big breaks? At $279 a month, one bad month takes a long time to earn back.
  2. Will you decide within three years of moving out? If you might sell later anyway, the tax clock can end up costing more than the rent brings in.

For the costs a first-time landlord tends to leave out, see 12 numbers to confirm before you make an offer on a rental. They apply to a house you already own, too.

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