Q: I need to increase my retirement savings. Would I be better off contributing more to my 401(k), or should I put my excess savings into an IRA?
If your employer's 401(k) or similar retirement plan offers matching contributions, you should be contributing enough to take full advantage of this. In other words, if your employer is willing to match your contributions up to 5% of your salary, this is the least you should be contributing.
Assuming that you're doing this, you can then put your additional contributions into your plan or an IRA, and both options have advantages.
The obvious advantage of increasing your 401(k) contributions is simplicity. All of your retirement savings will continue to be in one place, and 401(k) investments require minimal maintenance.
On the other hand, an IRA can give you far more control over your retirement savings. While 401(k) investments are generally limited to a selection of a few dozen mutual funds at best, in an IRA, you can choose from virtually any stock, bond, or mutual fund you want. If you want to put some of your retirement savings in Apple stock, you can do that in an IRA. There are also a few reasons you can tap into your IRA early that don't apply to your 401(k).
One word of caution is that if you are covered by an employer's retirement plan, your ability to take a traditional IRA tax deduction is limited, and Roth IRA contributions are income-restricted for everyone. So, before you consider an IRA as an option, check the current income limits and make sure you're legally allowed to participate.