I just got engaged with my girlfriend but we are not yet married. 

I’m 38, married with 3 kids!

The long-term capital gains tax rates are 0 percent, 15 percent and 20 percent, depending on your income and status (single, married, etc).  

They had purchased the property Married JTWROS I believe. 

Little background - As a married couple, since 2016-2022 we used a local well-known CPA in Austin,TX who prepared our taxes (and helped with some tax strategy/planning) for a W2 HIE + business owner.

It's like getting married when you purchase the property. 

As long as you've lived in your currrent primary for 2 years you'll get the first $250K of profit ($500K if married) tax free. 

Learn all you can from resources like BP and other forums, then marry that with some old fashioned physical labor.

We did not need help in deciding what our investment niche would be; we needed help in creating and implementing a tax strategy plan for a married couple composed of a high-income earner and a real estate agent and business owner.

The other 25% $3056 you could deduct in 2023 if you itemize but if you are married filing joint $27700 is the "flat" amount for 2023 that you would need to exceed to make it worth itemizing.