Name the milestone properly
The milestones worth marking are the ones that change what you can do. A month of expenses in the bank means a car repair no longer goes on a credit card. Three to six months means you can lose a job, or leave a bad one, without panic. Measure in months of expenses, because $10,000 is five months in one city and two in another.
Where the next dollar goes
Once the emergency fund target is met, extra cash has better places to be.
- Keep the emergency fund in a high-yield savings account at an insured bank, where federal deposit insurance covers $250,000 per depositor, and stop adding to it.
- Capture the full employer match in your retirement plan.
- Pay off any debt charging more than about 7 or 8 percent, since no safe investment reliably beats that.
- Fund a Roth IRA if your income qualifies, up to the annual limit, which the IRS adjusts most years.
- Raise workplace retirement contributions toward 15 percent of gross pay.
- Put money for goals more than five years away into a taxable account holding broad index funds.
Money you will need within five years, such as a down payment, stays out of the stock market. Savings accounts, certificates of deposit and Treasury bills are the right tools, since a 30 percent market drop the year before you buy a house is not recoverable on that schedule.
What inflation does to idle cash
At 3 percent inflation, $10,000 left in an account that pays nothing buys about $9,700 worth of goods a year later and roughly $7,400 worth after ten years. That is the argument for moving surplus cash along, and it is also a reason not to overcorrect. The emergency fund is insurance, not an investment, and its job is to be there.
Mistakes at the milestone
The errors are predictable. People leave the whole sum in checking, where it drifts into spending. People announce the number, and then field requests for loans. People reward themselves with a recurring expense, such as a bigger apartment or a car payment, which raises the cost of every future month. People put the first lump into a single stock on a coworker's tip. A better reward is a one-time purchase of 1 or 2 percent of the milestone, paid in cash and enjoyed fully.
Tip Set the next target the same day and automate it. Schedule a transfer for the morning after payday, and direct half of every future raise to savings before you ever see it.


