can you sell stock to purchase your primary residence, tax free

[mamamahon1]

selling stock to purchase home, capital gains tax to pay

[xmasbaby0]

You might be confusing this with using money from an IRA for a down payment on a house.   If you are under 59 1/2 and take money from a traditional IRA (not a 401k) to make a down payment on a home, the 10% early withdrawal penalty is waived on the first $10,000 although the distribution itself is taxable.   There is no such rule for selling stock to purchase a home.

[Opus 17]

No. If you sell stock that has a gain, you pay the tax.  It doesn't matter how you plan to use the money.