So you finally hit that six-figure savings milestone and now you're wondering what to do with 100k in the bank. It's actually more common than you'd think to feel a bit lost at this point. The money's sitting there, but is it really working for you?

First thing I'd suggest is making sure your emergency fund is solid. Most people aim for three to six months of expenses, but honestly, if you're at 100k, you might want to bump that up to seven months just to sleep better at night. Keep it somewhere accessible though, not locked away where you can't touch it when you actually need it.

Next up, if you're carrying high-interest debt, now's the time to tackle it. Credit cards, personal loans, whatever's eating away at your returns. Paying that off completely is going to feel amazing and actually save you money in the long run.

Once you've handled those two things, you can start thinking bigger picture. What are your actual long-term goals? Retirement? A house? A lot of people skip this step and just throw money at whatever seems popular, which is exactly how you end up with a messy portfolio. Maybe work with a financial advisor to figure out what makes sense for your specific situation.

Here's where it gets interesting though. What to do with 100k in the bank really depends on diversifying across different account types. You might want to look into a 401k or IRA if you don't have one already. A high-yield savings account is worth considering too, especially for that emergency fund. You could spread things out, put some in a high-yield account for shorter-term goals, invest some in a diversified portfolio for the long haul, and keep some liquid for unexpected stuff.

Don't sleep on protecting what you've built. Set up fraud alerts, check your credit report regularly, use strong passwords, enable two-factor authentication. Sounds boring but it's the difference between keeping your money and losing it to scams.

You should also be reviewing your financial plan regularly, not just once and forgetting about it. Are you still on track? Do you need to adjust anything? Markets change, life changes, your plan should too.

One last thing: if you're unhappy with your current bank's fees or service, don't just accept it. Look around for places offering better interest rates and lower fees. Local credit unions and community banks sometimes have better deals than you'd expect. Everyone's financial situation is different, so find an institution that actually gets your needs.

The thing about what to do with 100k in the bank is there's no one-size-fits-all answer. But having a solid plan beats just letting it sit idle. Take the time to figure out your priorities and you'll be in a much better position going forward.