Yes the IRS can seize jointly owned property through a court order.
If for example you have a jointly owned bank account then yes the IRS can take money from that jointly owned bank account to pay back the IRS owed money.
Or if you jointly own a house the IRS can legally put a lien on that house and take it from you if you owe the IRS money.
So if you do owe the IRS money you need to contact them and setup a payment plan to pay back the money owed.
The IRS will not ignore what you owe and will eventually catch up to you.
The IRS cannot jail you or take what you own simply because you owe them taxes and haven't paid in full.
You can almost always get the IRS to work with you on a payment plan to pay back the owed taxes.
What you should do is set aside money monthly out of your paycheck or other income into a separate bank account so that when it comes time to pay the IRS income taxes all you have to do is pay it and not worry about it.
That's what I do since I work from home.
I take a portion of my income and set it aside in a separate account and then have the money in the bank account to pay the taxes when they come due.