“Cash is king…but what good is a king that never gets off the throne?”

He just sits there: comfortable, admired, but not doing anything for the people he's supposed to serve. That’s how too much cash can behave in retirement: it looks strong and secure, but it’s not working for you. And over time, that comfort can quietly cost you.

Cash feels safe. It’s simple, liquid (technically it's a solid...or maybe it's just digital for you), and cash gives you a sense of control. especially when the market’s doing somersaults. But as comforting as that pile of cash can be, too much of it can quietly erode purchasing power, increase tax drag, and throw off your long-term income strategy.

Cash in Retirement: Friend, Foe, or Both?

Cash absolutely has a role in retirement. It keeps the lights on, buys you flexibility, and helps you sleep better at night. But over time, inflation and taxes can quietly turn that stability into stagnation.

Today, let’s unpack three key ideas:

1. The comfort and purpose of cash (why it matters emotionally and financially).
2. How cash can quietly sabotage your retirement plan.
3. And how to find your personal “sweet spot” between safety and growth.

1. The Emotional Safety Net

When the paycheck stops, cash becomes your security blanket. Having 6 to 12 months of expenses in the bank is healthy. It helps you weather volatility and resist the urge to panic-sell investments when markets dip.

But beyond that? You start shifting from safety to stagnation. Inflation—the quiet thief—erodes your buying power year after year. Even with “average” inflation around 3%, your purchasing power is cut in half in roughly 24 years. And healthcare, travel, and lifestyle costs often grow faster than that.

So while today’s high-yield savings accounts and CDs may pay around 4.5%, those rates won’t always last. If inflation rises or rates drop, that comfort zone can quickly turn into a regret zone.

2. The Tax Drag Dilemma

Here’s something most people can easily overlook: interest from cash is taxed as ordinary income. If you’re in a 22% bracket, that 4.5% CD yield becomes roughly 3.5% after taxes, and that’s before factoring inflation.

Compare that to a balanced portfolio that could net 5-6% after taxes and inflation over time. That gap compounds quietly, and over decades, can cost hundreds of thousands of dollars in lost opportunity.

This is where cash becomes a liability. It’s not bad, it’s just standing still while the rest of your plan moves forward. Think of it as financial friction.

3. The Liquidity Trap

Too much cash can paralyze your decision-making. You might tell yourself you’re “waiting for the right time” to invest, convert IRAs, or start income withdrawals, but history shows that waiting often costs more than acting.

I’ve met retirees with $500,000 in cash who said, “I don’t want to lose it.” The reality? They’re already losing - slowly - to taxes and inflation. A dollar in a savings account today might only buy $0.70 worth of goods ten years from now.

Finding Your Cash "Sweet Spot"

There’s no one-size-fits-all answer, but a smart framework looks something like this:

• 6–12 months of essential expenses in cash or CDs for true liquidity. Even here: I'd usually look as a money market fund earning something in lieu of cash earning almost nothing.
• 1–2 years of spending in a short-term income bucket (think high-quality bonds or short-term Treasuries).
• The rest should be invested for long-term growth and inflation protection.

This layered approach balances comfort and productivity. Your cash is ready when needed, and your investments continue working for future you.

Bottom Line

Cash might be king, but a good king leads. It doesn’t just sit on the throne polishing its crown. It works the land, strengthens the kingdom, and ensures its people thrive. That’s what your cash should do: serve you, not sit idly while opportunity passes.

Remember, it’s not about having the smartest financial advisor, the most money saved, or the highest probability of retirement success. Whether you’re nearing retirement, recently retired, or deep into it - the perfect retirement plan for you is the one you act on.