You might have €100,000 in net worth and still not be able to pay a €2,000 car repair bill.
How? If most of that net worth is tied up in a house or a retirement account, you can’t get to it quickly without penalty or loss.
That’s liquidity, and ignoring it is one of the most common ways an otherwise solid financial plan falls apart.
What liquidity means
Liquidity is how quickly and easily you can convert an asset to cash at its full value.
- Cash in a current account: fully liquid. You can access it in seconds
- Money in a savings account: very liquid. A transfer takes a day or two
- Stocks and index funds: mostly liquid. You can sell during market hours and have cash within a few days. But the price at which you sell might not be the price you want
- Real estate: illiquid. Selling a house takes weeks or months, and you’ll pay significant fees
- Retirement accounts: partially liquid at best. Some countries allow early access with tax penalties; many pensions cannot be touched until retirement age
The liquidity spectrum
Think of it as a scale:
| Asset | How quickly can you get cash? | Risk of loss on sale? |
|---|---|---|
| Cash / current account | Instantly | None |
| Savings account | 1-2 days | None |
| Stocks / index funds | 2-3 days | Market may be down when you sell |
| Bonds | 2-3 days | Usually small for short-term bonds; long-term bonds can fall sharply when rates rise |
| Retirement accounts | Days if early access is allowed; in many countries, not until retirement age | Possible tax penalty, or no access at all |
| Real estate | Weeks to months | Selling costs, market conditions |
| Car | Days to weeks | Depreciated value |
Why low liquidity is dangerous
Being asset-rich and cash-poor is a real problem.
Imagine two people:
Person A has €50,000 in a house and €2,000 in savings. Net worth: €52,000.
Person B has €20,000 in index funds and €10,000 in savings. Net worth: €30,000.
Person A has a higher net worth. But if the car breaks down and the repair costs €3,000, Person A has a problem. They can’t access their house’s value without selling it or borrowing against it, both of which take time and cost money.
Person B can cover the repair without stress and still have €27,000 invested.
Higher net worth doesn’t always mean better financial position. Liquidity matters.
When illiquidity is appropriate
This doesn’t make all-cash the answer. Cash is liquid but it loses value to inflation over time, as we’ll discuss later. Illiquid assets serve a purpose:
- Real estate builds equity over the long term and can appreciate significantly
- Retirement accounts, where they exist, have tax advantages that often make the lock-up period worthwhile, though the tax treatment and early-access rules are set nationally
- Long-term investments have historically earned higher returns as payment for riding out the ups and downs, and compound interest rewards that patience
The underlying idea is matching liquidity to timeline. Money needed in the next few years usually needs to be more liquid. Money that won’t be touched for decades can afford to be less liquid.
A common framework
There’s no single correct ratio, but many people think in three tiers:
- Emergency fund. Enough in a savings account to cover a few months of essential expenses, often three to six. This is the liquidity baseline. As we’ll cover in the next post, it exists so a crisis doesn’t force a sale of investments at a loss or a high-interest loan
- Medium-term savings. Money needed in 1-5 years (a house deposit, a car, a wedding) is usually kept in relatively safe, accessible places: high-yield savings, short-term bonds, or term deposits
- Long-term investments. Money not needed for 5+ years is where people typically use index funds and other growth assets. The volatility, and in some accounts the lock-up, is the trade-off for higher expected returns
The sizes depend on your income stability, insurance, your country’s safety net and how soon your goals arrive.
Common liquidity mistakes
- Keeping too much in cash. Beyond your emergency fund and short-term goals, excess cash slowly loses purchasing power to inflation
- Keeping too little in cash. If every euro is invested, you’ll be forced to sell investments at whatever the market price is, which could be down exactly when you need the money
- Confusing accessible with liquid. Borrowing against your home (a home equity loan or line of credit, where lenders offer one) gives you access to its value, but you’re paying interest. Accessible is not the same as liquid
- Forgetting about tax penalties. Withdrawing from retirement accounts early can trigger taxes and penalties that significantly reduce what you actually get. Whether early access is allowed, and what it costs, depends on your country and plan
How this connects to net worth
In the assets post, we looked at asset quality. Liquidity is one of the most important dimensions of that quality. Your net worth tells you what you have. Liquidity tells you what you can actually use.
A financial plan that ignores liquidity is like a car with a powerful engine but no fuel gauge. It runs great until it doesn’t.
Now that you understand how accessible your money is, the next question is: how much should you keep liquid? That’s where the emergency fund comes in: the practical application of everything we’ve covered here.