Can an emergency fund be too big?

Yes. Once you have a solid 3–6 months of essential expenses (more if your income is unstable or you're self-employed or retired), extra cash piled into a savings account starts working against you. Beyond your safety net and any near-term sinking-fund goals, money earning a modest savings rate tends to lose ground to inflation over time, while the same dollars in a diversified portfolio have historically grown. Holding 12+ months of expenses in cash "just in case" feels safe but quietly costs you growth and is a common form of being too conservative. Keep the right-sized cushion liquid and insured, then direct surplus toward retirement accounts and investing. If you're unsure where your number should land, check your reserve against your real expenses at wealthserene.com/tools/emergency-fund, then redirect the excess.