From here:
Most taxpayers won’t ever pay gift tax because the IRS allows you to gift up to $12.06 million over your lifetime without having to pay gift tax. This is the lifetime gift tax exemption, and it’s up from $11.7 million in 2021.
So let’s say that in 2021 you gift $216,000 to your friend. This gift is $200,000 over the annual gift exclusion. That means you will need to report it to the IRS. However, you won’t immediately have to pay tax on that gift. Instead, the IRS deducts that $200,000 from your lifetime gift tax exemption. Assuming you have never made any other gifts over the annual exemption, your remaining lifetime exemption is now $11.86 million ($12.06 million minus $200,000).
…one way to prevent taxation of any assets you pass on is to gift those assets in increments of $16,000 or less. This could take some planning on your part but it is completely legal.
Reading further there, the estate tax and gift tax are linked: the estate tax exclusion is $12.06M or the remainder of your lifetime gift tax exemption, whichever is less. So if you have an estate worth well over $12.06M, and you want your heirs to receive as much of your wealth as possible, then the winning strategy is to give them annual gifts right up to the annual exclusion limit so they don’t weigh against the lifetime exclusion. If you start early enough so that your remaining estate is whittled down to less than $12.06M by the time you die, then your estate won’t be taxed.
If you’re married, the IRS says you and your spouse are each entitled to the annual exclusion. So you and your spouse together could give $32,000 to any one person in any one tax year, and it wouldn’t weigh against the lifetime exclusion. A follow-up question is whether you and your spouse could give $32K to your child, and then also give $32K to your child’s spouse, and have all of it subject to the annual exclusion. I suspect so, but the IRS doesn’t explicitly say that at that link. If true, it would mean you and your spouse could give $64K to another couple each tax year without incurring any tax.
As the first link notes, most people don’t ever accumulate or give away enough money to trigger a gift tax or estate tax, so unless you’re really wealthy, this is all academic (as long as you file the proper IRS paperwork when you give more than $16K to any individual in any single year).