How much emergency fund is too much?

so the standard advice is 3-6 months expenses in an emergency fund right? well I have about 9 months saved up in my ally HYSA and my wife thinks im being paranoid. she wants to invest some of it.

our monthly expenses are around $4,200 so thats almost $38k just sitting in savings. is that too much? I work in manufacturing and layoffs are always a possibility so I like having the cushion but maybe shes right that some of it could be doing more in the market.

what do you guys keep in your e-fund

I don't think 9 months is crazy at all, especially in manufacturing where layoffs are a real concern. The "3-6 months" advice is a general guideline not a hard rule.

Things that should push you toward a bigger emergency fund:
- Unstable industry (sounds like you)
- Single income household
- Kids or dependents
- Older house/car that might need expensive repairs
- Health issues

I personally keep about 7 months which is maybe more than strictly necessary but I sleep better at night. My husband has a stable government job so we could probably get away with less but the extra cushion has zero downside other than slightly lower returns vs investing.

That said -- is your wife working too? If you're dual income the risk of BOTH of you losing income at the same time is pretty low so maybe 6 months is reasonable.

Your wife is right. 9 months is too much cash on the sidelines.

Here's the math: $38k in a HYSA at 4% = $1,520/year. That same $38k invested in a total market index fund historically returns ~10% = $3,800/year. You're leaving $2,280/year on the table by keeping that much in savings.

Keep 4-5 months in the HYSA and invest the rest. If you're worried about layoffs, you'll also presumably get severance and can file for unemployment which buys you more time than you think.

I keep exactly 3 months in cash. Everything else is invested.

I'm going to disagree with TotalReturnGuy here (shocker I know). The purpose of an emergency fund is not to maximize returns. It's insurance. You don't optimize your car insurance for ROI, you buy enough to protect yourself.

I've been through 3 recessions and let me tell you -- the people who had "too much" cash in 2008 were the ones sleeping at night while everyone else was panicking and selling their stocks at the bottom. You never regret having too much emergency fund during a crisis. You absolutely can regret having too little.

The "you're leaving money on the table" argument assumes the market always goes up, which it does long-term, but if you get laid off during a 30% market crash (which is exactly when layoffs happen btw) you'd be selling investments at the worst possible time.

9 months in manufacturing with layoff risk is perfectly reasonable. If it gives you peace of mind that has real value even if you cant put a number on it.

I kept 12 months cash when I was working. Now retired I keep about 2 years in cash/short bonds because I don't have employment income to fall back on.

Here's how I think about it with actual numbers:

Scenario A: Keep $38k in HYSA at 4.00%
- Annual interest: $1,520
- Risk: essentially zero
- Liquidity: immediate

Scenario B: Keep $21k (5 months) in HYSA, invest $17k
- HYSA interest: $840
- Expected stock return (10% avg): $1,700
- Total expected: $2,540
- Risk: the $17k invested portion could drop 30-40% in a bad year, exactly when you might need it

Expected gain from Scenario B: ~$1,020/year. But that comes with the risk of being forced to sell investments during a downturn.

Personally I think the answer depends on how stable your job actually is. If layoffs happen every 2-3 years in your industry, 9 months is smart. If it's more theoretical, 6 months is probably fine.

I keep 6 months myself. Dual income, both in tech, no kids yet.

This is fine if you're young, healthy, single, and have a stable job. It's not good universal advice. Different people have different risk profiles and that should be reflected in their emergency fund size.

I've always kept 6 months and I think that's the sweet spot for most employed people. 9 months is on the higher side but not unreasonable given the OP's situation.

One middle ground option: keep 6 months in a HYSA and put the other 3 months worth into something like a short-term treasury fund (VGSH or similar). Still very safe, slightly higher return than a savings acct, and you can sell it in 1-2 days if needed. Not quite as liquid as a savings account but close enough for the outer layer of your emergency fund.

Mod note: this is a good discussion, glad to see both sides being respectful.

My two cents as someone who does accounting -- there's no objectively correct answer here. I've seen people get laid off and find a new job in 2 weeks and I've seen people take 8 months. The "right" amount of emergency fund depends on so many personal factors that internet strangers can only give you rough guidelines.

Factors specific to you: dual income or single? Mortgage or rent? Any health conditions? How quickly could you find comparable work in your area? Do you have other liquid assets you could tap (taxable brokerage account, etc)?

If keeping 9 months makes you and your wife both feel secure (even if she wants a bit less), there's nothing wrong with that. The opportunity cost of holding extra cash is real but small. The peace of mind is also real.

thanks everyone. wife does work part time but its not enough to cover all the bills on its own. so we're basically single income for planning purposes.

I think im gonna keep 7-8 months and maybe move a few thousand into that short term treasury thing VanguardLifer mentioned. good compromise. the spreadsheet from dan really helped me see the actual dollar difference is not that huge.

retired_in_FL the point about selling stocks during a crash is what really got me. thats exactly the scenario im worried about