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Should we invest some of our savings to protect against inflation?
Okay. Savings-in-a-nutshell. So, take at least year's worth of rent - $30k or so, maybe more for additional expenses. That's your core emergency fund for when you lose your job or total a few cars or something. Keep it in a good savings account, maybe a CD ladder - but the point is it's liquid, and you can get it when you need it in case of emergency. Replenish it immediately after using it. You may lose a little cash to inflation, but you need liquidity to protect you from risk. It is worth it. The rest is long-term savings, probably for retirement, or possibly for a down payment on a home. A blended set of stocks and bonds is appropriate, with stocks storing most of it. If saving for retirement, you may want to put the stocks in a tax-deferred account (if only for the reduced paperwork! egads, stocks generate so much!). Having some money (especially bonds) in something like a Roth IRA or a non-tax-advantaged account is also useful as a backup emergency fund, because you can withdraw it without penalties. Take the money out of stocks gradually when you are approaching the time when you use the money. If it's closer than five years, don't use stocks; your money should be mostly-bonds when you're about to use it. (And not 30-year bonds or anything like that either. Those are sensitive to interest rates in the short term. You should have bonds that mature approximately the same time you're going to use them. Keep an eye on that if you're using bond funds, which continually roll over.) That's basically how any savings goal should work. Retirement is a little special because it's sort of like 20 years' worth of savings goals (so you don't want all your savings in bonds at the beginning), and because you can get fancy tax-deferred accounts, but otherwise it's about the same thing. College savings? Likewise. There are tools available to help you with this. An asset allocation calculator can be found from a variety of sources, including most investment firms. You can use a target-date fund for something this if you'd like automation. There are also a couple things like, say, "Vanguard LifeStrategy funds" (from Vanguard) which target other savings goals. You may be able to understand the way these sorts of instruments function more easily than you could other investments. You could do a decent job for yourself by just opening up an account at Vanguard, using their online tool, and pouring your money into the stuff they recommend.