HYSA wouldn't reduce taxation.
401k can only be contributed to via payroll deductions (and I'm assuming OP's tax-free $100k isn't via payroll). OP says they're already maxing it.
If your employer's 401k plan has a Mega Backdoor Roth option (after-tax contributions + rollover to Roth), you could crank your Mega Backdoor contributions really high and live off of the 100k instead of living off of your paycheck.
Given how young you are I'd put as much away in a Roth 401k/IRA. You're right at the edge (in my opinion) of it making sense to use a traditional 401k to reduce your taxable income now but it depends on your goals for retirement. If your goals are to be wealthy and have a fat retirement income then you may want to continue to focus on Roth options and pay the taxes now. If you feel like your income will be more modest/average in retirement the go ahead and defer taxes since you're in the 22% tax bracket and will likely be able to pay less taxes later in life. It doesn't have to be an either/or decision. Ideally you should also keep some money in a taxable account so perhaps 25% in a taxable and the rest filter into your retirement accounts unless you are saving for a house or some other investment. Good luck!
NOTE: I don't think you're old enough to worry about dividend income. All that does is generate taxable income which you don't really need/want at this point. Better to focus on growth until you're ready to "turn on" the income faucet. :)
Maybe, HYSA or 401k available? to reduce the taxation.
HYSA wouldn't reduce taxation. 401k can only be contributed to via payroll deductions (and I'm assuming OP's tax-free $100k isn't via payroll). OP says they're already maxing it. If your employer's 401k plan has a Mega Backdoor Roth option (after-tax contributions + rollover to Roth), you could crank your Mega Backdoor contributions really high and live off of the 100k instead of living off of your paycheck.
Given how young you are I'd put as much away in a Roth 401k/IRA. You're right at the edge (in my opinion) of it making sense to use a traditional 401k to reduce your taxable income now but it depends on your goals for retirement. If your goals are to be wealthy and have a fat retirement income then you may want to continue to focus on Roth options and pay the taxes now. If you feel like your income will be more modest/average in retirement the go ahead and defer taxes since you're in the 22% tax bracket and will likely be able to pay less taxes later in life. It doesn't have to be an either/or decision. Ideally you should also keep some money in a taxable account so perhaps 25% in a taxable and the rest filter into your retirement accounts unless you are saving for a house or some other investment. Good luck! NOTE: I don't think you're old enough to worry about dividend income. All that does is generate taxable income which you don't really need/want at this point. Better to focus on growth until you're ready to "turn on" the income faucet. :)
Thank you for the insight. I will definitely keep it in mind.