“Can you live on $30,000 a year?” and “Is $3,000 a month livable?” are two of the most common cost-of-living questions people search. Neither has a real answer, because both leave out the one thing that actually determines it: where you live and what your fixed costs are.

$30,000 a year works out to about $2,500 a month before taxes. $3,000 a month is about $36,000 a year. Both can be comfortable in a low-cost area with no dependents. Both can be underwater the moment rent is due in an expensive city. The number in the headline isn’t wrong, it’s just not about you.

The number that’s actually useful is one you calculate yourself: your minimum viable income.

What minimum viable income means

Minimum viable income (MVI) is the least amount of money you need coming in each month to cover your fixed, non-negotiable costs. Not your lifestyle, not your goals, just the floor that keeps rent paid, the lights on, and food in the fridge.

It’s the same concept as the “floor” in our guide to budgeting irregular income, just framed as a standalone question: not “how do I budget,” but “what’s the actual number.”

How to calculate your own number

List every fixed monthly cost you can’t skip:

Add it up. That total is your minimum viable income. It’s specific to you: your city, your household, your existing debt. It won’t match the $30k or $3k headline, and it doesn’t need to.

Why rent decides most of the answer

For almost everyone, housing is the single largest line item, and it’s also the one with the widest range. The same $3,000 a month might mean a comfortable cushion after rent in one metro area and mean nothing left over after rent alone in another. Before comparing yourself to a generic livable-wage number, run the math on your actual rent or mortgage first. Everything else on the list is comparatively similar no matter where you live; housing is what moves the number the most.

Why this number matters more with irregular income

If you’re salaried, your minimum viable income is mostly a curiosity, a way to know your cushion. If your income is irregular, freelance, commission, seasonal, or gig-based, it’s the number your buffer needs to be built around. A vague sense of “I probably need around three grand” isn’t precise enough to know if a slow month is actually a problem or just a normal dip. A real number, added up line by line, tells you exactly when to worry and when not to.

Once you have that floor, the next question is timing: does your income actually arrive before your fixed costs are due. That’s a separate problem from the size of the number, and it’s the one a bank balance alone won’t show you. A calendar view of income and expenses will, which is the core of what SteadyCash does.

Common questions

Can one person live off $30,000 a year?

In a lot of the US, yes, especially without dependents and without high rent. In a major metro with expensive housing, it’s tight to impossible without roommates or subsidized housing. $30,000 a year is about $2,500 a month before taxes, and whether that covers your fixed costs depends almost entirely on your rent or mortgage, which is usually the single biggest line item.

Is $3,000 a month a livable wage?

For one person in a low-to-moderate cost area, usually yes. In a high-cost city, $3,000 a month can be consumed by rent alone before anything else is paid, so it depends heavily on location, household size, and debt load. The number that actually matters is your own minimum viable income: what your specific fixed costs add up to.

How do I calculate my minimum viable income?

List every fixed, non-negotiable monthly cost: rent or mortgage, utilities, insurance, minimum debt payments, groceries, transportation, and any recurring bills you can’t skip. Add them up. That total is your minimum viable income, the floor your income needs to clear every month regardless of what a generic number online says.