Bird, you are right that the first
time homebuyer exception applies to an IRA and not a 401(k).
I think the poster is looking for the
extended repayment feature that applies to a loan from a 401(k), and as you know, a loan cannot be made from an IRA... and distributions must be rollover over ( re-deposited) within 60-days in most cases.
So, my modified response …
For IRAs, you can withdraw any amount at anytime. If the amount is rolled over within 60-days (assuming it is rollover eligible), the amount is tax-free and penalty-free.
If the IRA distribution is used towards a first-time home, the 10% penalty does not apply. This is limited to $10,000 (this may be where the poster got the $10,000 from).
For 401(k) plans ( and other non-IRA employer sponsored plans), the participant may borrow the lesser of $50,000 or 50% of his or her vested balance. However, a participant may be able to borrow up to $10,000, even if 50% of the vested balance is less than $10,000 [ this could also be where the poster got the $10,000 from, especially given the extended repayment period) . This loan may be repaid over five years. The repayment period may be longer if the loan is used for a principal residence. Of course, as Bird explained, the availibility of the loan depends on plan provisions.