Where to Store Your Emergency Fund: A Boglehead's Guide
As a Boglehead, you understand the importance of having an emergency fund to cover 3-6 months' worth of living expenses. But where should you keep this crucial safety net? Here's a comprehensive guide on the best places to store your emergency fund, tailored to the Boglehead philosophy of low-cost index investing and easy access.
High-Yield Savings Accounts (HYSA)
High-yield savings accounts are the most popular choice among Bogleheads for emergency funds. They offer:
- Easy access to your money with no penalties for withdrawals.
- FDIC insurance up to $250,000, protecting your funds in case of bank failure.
- Competitive interest rates, currently around 0.50% - 0.60% APY.
Some online banks offer higher yields than traditional brick-and-mortar banks. Consider options like Ally Bank, Marcus by Goldman Sachs, or Discover Bank.
Money Market Accounts (MMA)
Money market accounts are similar to high-yield savings accounts but may require a higher minimum balance. They often come with:
- Higher interest rates than savings accounts.
- Limited check-writing privileges or a debit card for easy access to funds.
- FDIC insurance up to $250,000.
While MMAs can offer slightly higher yields, they may not be worth the hassle if you need frequent access to your emergency fund.
Certificates of Deposit (CDs)
Certificates of Deposit offer a fixed interest rate for a specific term, typically ranging from three months to five years. While CDs can provide higher yields than savings or money market accounts, they come with:

- Early withdrawal penalties, making them less accessible for emergencies.
- Less flexibility, as you're locked into a specific term and rate.
CDs can be a good option for a portion of your emergency fund if you're comfortable with the lack of liquidity and want to earn a higher yield.
Treasury Securities
U.S. Treasury securities, such as Treasury bills (T-bills), notes, and bonds, are considered risk-free because they're backed by the full faith and credit of the U.S. government. They can be a good option for a portion of your emergency fund if you're looking for:
- Low risk and high liquidity.
- Short-term investments (T-bills mature in one year or less).
However, yields on Treasury securities are currently low, making them less attractive for emergency fund purposes.
Comparing Your Options
Here's a table comparing the features of the storage options discussed:
| Account Type | Interest Rate | Accessibility | FDIC Insurance | Minimum Balance |
|---|---|---|---|---|
| High-Yield Savings | 0.50% - 0.60% APY | Easy access | Up to $250,000 | Low or none |
| Money Market | 0.60% - 0.80% APY | Limited check-writing or debit card | Up to $250,000 | Higher |
| Certificates of Deposit | 0.50% - 2.00% APY (varies by term) | Early withdrawal penalties | Up to $250,000 | Higher |
| Treasury Securities | 0.08% - 1.75% (varies by term) | High liquidity | Full faith and credit of the U.S. government | None |
Final Thoughts
When deciding where to store your emergency fund, consider factors like accessibility, yield, and minimum balance requirements. As a Boglehead, you understand the importance of keeping your emergency fund separate from your investment portfolio. High-yield savings accounts are typically the best choice for most Bogleheads, but consider a mix of options to balance yield, liquidity, and risk.