@user17533562053 need more information.
Why did you not live there the other months? job somewhere else? medical situation? convenience? rented it out? etc. please explain in detail.
That sort of detail will explain the outcome.
On the surface, if you only lived there for 18 of the last 60 months and the reason was simply for convenience you lived elsewhere, you are not eligible fort the capital gains exclusion and will pay all the capital gains tax.
Also include your expected income and the amount of the capital gains in your response.
Determining capital gains tax can be trickly at the lower end of the income spectrum - it is not necessarily a straight 15%.
