To put it in @Michael Plaks metaphor, Why would you put a ring on their finger if your intent wasn't to marry them? 

With your primary you have a 1021 exemption you can use up to $500K (Married Couples) and if there is any gain above that then you will also have capital gain taxes on that. 

The old adage is that you "marry the property, but date the rate" meaning that you can refinance down the road to lower the rate if the opportunity arises.

Let me share my story.As the title suggests, I received a house as a gift from my father-in-law upon getting married.

In June 2022, I got married and my wife moved in, and around that same time, all the tenants moved out.

I meet the requirements for an accredited investor and so do many people in the San Francisco Bay Area (pretty easy for a married couple with $300,000 income, lots of people in that situation).

I'm excited to share that I'm getting married in April 2025.

Get a feeling if they're married to the unit or if they might flea if you raise rents.

This way the first $250k (if single) or first $500k (if married) of the profits are tax free.

That is the capital gains exclusion for selling your primary residence.If you live in your house for 2 of the last 5 years you get a capital gains exclusion up to $250K if single, $500K if married.