Which is better 401k or 403B?

While 401(k) and 403(b) plans have the same general contribution limits, 403(b) accounts have an edge: Employees who have worked for a qualified organization for 15 years or more may be eligible ...

Can I roll funds from a 401k into a 403B?

You can move money from your 401k plan to your 403b plan either through a rollover or through a direct transfer. With a rollover, the money is paid to you first, and then you have up to 60 days to redeposit the money into the 403b plan. With a direct transfer, the money moves automatically from your 401k plan to your 403b plan.

Is a 403B worth it?

The advantage of a 403B is it reduces your income for the year, so you pay less taxes. When you retire, you pay taxes on the money (the amount you put plus all of the gains). The advantage of a Roth is you pay taxes on the income this year, but when you retire, you pay no taxes on what you put in or any of the gains.