This sounds simple, but it’s one of the most important numbers to understand.

What does your life cost each month right now?

Think about housing, utilities, insurance, food, transportation, debt payments, healthcare, travel, entertainment, subscriptions, helping children or grandchildren, and everything else that leaves your bank account.

You don’t need to account for every coffee you’ve ever bought.

You do need a realistic picture of what it takes to maintain your life.

Then think about retirement.

Some expenses may decrease. Others may increase.

And if retirement includes traveling, hobbies, visiting family, eating out, or simply enjoying your time more, you need to account for that too.

Retirement planning should be based on the life you actually want to live — not just the cheapest version of retirement you can survive.

This is where retirement planning starts becoming very real.

Make a list of the income you expect after leaving your regular paycheck.

That might include Social Security, pension income, 401(k) or IRA withdrawals, investment income, rental income, business income, part-time work, or other income-producing assets.

Then ask yourself:

Will those income sources support the lifestyle I just wrote down?

Many people spend years concentrating on accumulating money without spending nearly enough time thinking about how that money will eventually produce income.

Those are two different questions.

Having retirement assets matters.

But understanding your retirement income matters too.

This is a big one.

Debt doesn’t magically disappear when you retire.

You may still have a mortgage, vehicle payments, credit cards, personal loans, home equity loans, or other monthly obligations.

And sometimes the balance isn’t even the biggest issue.

The payment is.

A $500 payment is $500 of monthly cash flow that can’t be used somewhere else.

It can’t go toward another investment.

It can’t create another income stream.

It can’t fund travel.

It can’t build savings.

It can’t give you more choices.

That’s why reducing debt can be about much more than simply becoming “debt free.”

It can be about freeing cash flow.

Cash flow simply means understanding what’s coming in and what’s going out.

But this is where many people finally realize why they can have a good income and still feel financially stuck.

Maybe you earn good money.

Maybe you’ve worked hard for decades.

Maybe you’ve even increased your income substantially over the years.

But if nearly all of that money already has somewhere to go every month, you may not have nearly as much financial flexibility as your income suggests.

Instead of asking only:

“How much money do I make?”

start asking:

“How much of the money I make do I actually control?”

That question can completely change how you look at your financial situation.

Most of us were taught a pretty straightforward financial path:

Work.

Earn a paycheck.

Save.

Contribute to retirement accounts.

Eventually retire.

But as retirement gets closer, it’s worth asking whether depending on only one primary source of income gives you the amount of control you want.

Could you eventually create additional income streams?

Could some of your assets produce income?

Could cash flow that is currently tied up somewhere else eventually be redirected?

You don’t need ten businesses or a complicated financial empire.

The bigger idea is simply this:

More than one source of income can create more options.

And options are incredibly valuable when you’re preparing for retirement.

Before making bigger financial decisions, get a clear snapshot of where you stand today.

Make two lists.

What you own might include cash, savings, retirement accounts, investments, real estate, business assets, and other things of value.

What you owe might include mortgage balances, vehicle loans, credit cards, personal loans, home equity debt, and other liabilities.

You aren’t doing this to compare yourself with somebody on the internet.

You are doing it so you can finally see your starting point.

Because once you know where you are, it’s much easier to decide where you want to go next.