High-Yield Savings vs Money Market: Where to Park Your Emergency Fund

General
1

I finally sat down and organized my emergency fund strategy in Beancount, and the HYSA vs Money Market question kept coming up. Here’s how I’m thinking about it in 2026.

The Rate Situation

As of Feb 2026, both are paying similar rates:

  • Top HYSAs: 4.00-5.00% APY
  • Money Market Accounts: 3.75-4.80% APY
  • Traditional savings: 0.39% (national average)

After three Fed rate cuts in 2025, we’re still at historically good rates. But the spread between HYSA and MMA has narrowed.

How I’m Structuring Accounts

2026-02-01 * "Emergency Fund Structure"
  Assets:Emergency:HYSA:Wealthfront     10000.00 USD  ; 6 months expenses - rarely touch
  Assets:Emergency:MMA:Fidelity          5000.00 USD  ; Immediate access layer
  Assets:Checking:Primary                2000.00 USD  ; Day-to-day buffer

My Logic:

Tier 1 (HYSA): Deep Emergency Reserve

  • 6 months of expenses
  • Optimized for yield (5.00% APY)
  • Transfer to checking takes 1-2 days
  • Rarely accessed

Tier 2 (MMA): Quick Access Emergency

  • 1-2 months expenses
  • Check/debit card access
  • 4.50% APY (slightly lower but worth the liquidity)
  • Use this FIRST if emergency hits

Tier 3 (Checking): Operating Cash

  • 2-4 weeks expenses
  • Immediate access
  • 0% APY but that’s fine for this purpose

HYSA vs MMA Decision Framework

Use HYSA if:

  • You want maximum yield
  • You manage funds primarily online
  • 1-2 day transfer delay is acceptable
  • You have another liquid account for immediate emergencies

Use MMA if:

  • You want check/debit card access
  • You value flexibility over a few basis points
  • You’re consolidating emergency + operational funds
  • You prefer all-in-one account

The FDIC Coverage Consideration

Both are FDIC insured up to $250K per person, per bank, per account type.

If your emergency fund exceeds $250K, split across multiple banks:

Assets:Emergency:HYSA:Bank1  250000.00 USD
Assets:Emergency:HYSA:Bank2  200000.00 USD

Tracking Rate Changes

I add notes when rates change significantly:

2026-02-15 note Assets:Emergency:HYSA:Wealthfront "Rate decreased from 5.10% to 5.00% APY"

Helps me decide if I should shop around or stay put.

The Real Question: How Much to Hold?

More important than HYSA vs MMA is: how much emergency fund do you actually need?

Traditional advice: 3-6 months expenses
Freelancers/variable income: 6-12 months
Dual-income stable jobs: 3-4 months might be fine

I track my “required emergency fund” as a goal in Beancount and measure against it quarterly.

Tax Implications

Both HYSA and MMA interest is taxable as ordinary income.

At 5% APY on $15K, that’s $750/year in interest = ~$200 in taxes (depending on bracket).

Not huge, but worth tracking for tax planning.

Anyone else using a tiered emergency fund approach? Or am I overthinking this?

Sources:

2

Fred, I love the tiered approach! It’s exactly what I recommend to clients.

One thing to add: Money Market Accounts often have minimum balance requirements that HYSAs don’t.

For example:

  • Fidelity MMA: $2,500 minimum for best rate
  • Schwab MMA: No minimum, but $0.01 balance pays nothing
  • Vanguard MMA: $3,000 minimum

Compare to HYSAs:

  • Wealthfront: No minimum
  • Marcus: No minimum
  • Ally: No minimum

This matters for new savers building up their emergency fund. You might need to start with HYSA until you hit MMA minimums.

In Beancount, I track this with balance assertions:

2026-02-28 balance Assets:Emergency:MMA:Fidelity  >= 2500 USD

If balance drops below minimum, I get an error and know I need to transfer funds or switch accounts.

3

The tax tracking piece is important!

At 5% APY, interest adds up fast. On a $50K emergency fund, that’s $2,500/year in taxable interest.

Two Beancount tips for tracking this:

  1. Record interest monthly:
2026-02-28 * "HYSA Interest"
  Income:Interest:HYSA  -41.67 USD
  Assets:Emergency:HYSA  41.67 USD
  1. Track cumulative interest for tax planning:
2026-12-31 balance Assets:Emergency:HYSA  52500.00 USD
2026-12-31 note Assets:Emergency:HYSA "Total interest earned 2026: $2,500 (will receive 1099-INT)"

Come tax time, you’ll know exactly what to expect on your 1099-INT before it arrives.

Also worth noting: Interest from money market funds (not accounts) is reported differently—on Form 1099-DIV instead of 1099-INT. Same tax treatment, different form. Make sure your ledger tracks which type you have.

4

Fred, I love the tiered approach! It’s exactly what I recommend to clients.

One thing to add: Money Market Accounts often have minimum balance requirements that HYSAs don’t.

For example:

  • Fidelity MMA: $2,500 minimum for best rate
  • Schwab MMA: No minimum, but $0.01 balance pays nothing
  • Vanguard MMA: $3,000 minimum

Compare to HYSAs:

  • Wealthfront: No minimum
  • Marcus: No minimum
  • Ally: No minimum

This matters for new savers building up their emergency fund. You might need to start with HYSA until you hit MMA minimums.

In Beancount, I track this with balance assertions:

2026-02-28 balance Assets:Emergency:MMA:Fidelity  >= 2500 USD

If balance drops below minimum, I get an error and know I need to transfer funds or switch accounts.

5

The tax tracking piece is important!

At 5% APY, interest adds up fast. On a $50K emergency fund, that’s $2,500/year in taxable interest.

Two Beancount tips for tracking this:

  1. Record interest monthly:
2026-02-28 * "HYSA Interest"
  Income:Interest:HYSA  -41.67 USD
  Assets:Emergency:HYSA  41.67 USD
  1. Track cumulative interest for tax planning:
2026-12-31 balance Assets:Emergency:HYSA  52500.00 USD
2026-12-31 note Assets:Emergency:HYSA "Total interest earned 2026: $2,500 (will receive 1099-INT)"

Come tax time, you’ll know exactly what to expect on your 1099-INT before it arrives.

Also worth noting: Interest from money market funds (not accounts) is reported differently—on Form 1099-DIV instead of 1099-INT. Same tax treatment, different form. Make sure your ledger tracks which type you have.