How to Track Your Net Worth: A Complete Guide (Including Your Home, Car, and 401(k))

Your checking balance tells you whether you can pay rent, and your credit score tells lenders how you handle debt. Your income shows what comes in each month. To know whether your financial life is getting better or worse, all things considered, you need a different number: your net worth.

Most people have never calculated it. In a Credit Karma survey, 67% of Americans said they don’t track their net worth and 51% didn’t know how to calculate it.^[1] This guide covers how to do both, along with the parts most calculators skip.

Why net worth is the number that matters

Net worth captures every financial decision in one place. Pay down a credit card, and it goes up. Buy a car with a loan, and it barely moves on day one, then falls as the car depreciates faster than the loan shrinks. Max out your 401(k), and it climbs. Income alone can’t show you any of that, which is how plenty of high earners end up with negative net worth.

There’s also good evidence that watching the number helps. A meta-analysis in Psychological Bulletin pooled 138 randomized experiments with nearly 20,000 participants and found that monitoring progress toward a goal reliably improved the odds of achieving it. The effect was larger when progress was physically recorded or shared with others.^[2] Few behavior-change tools have that much evidence behind them, which makes tracking worth the effort for reasons well beyond bookkeeping.

The formula

The math itself is simple:

The subtraction is easy. What takes effort is getting accurate numbers into both columns and keeping them accurate over time.

How to calculate it, step by step

1. 1
   List every account you have

   Checking, savings, brokerage, 401(k), IRA, HSA, 529 plans, crypto, credit cards, mortgage, auto loans, student loans, personal loans, buy-now-pay-later plans. If money can go in or out of it, it belongs on the list.
2. 2
   Record current balances on the same day

   Pull every balance on one date. Mixing a balance from the 1st with one from the 20th can make money that moved between accounts appear twice, or not at all.
3. 3
   Add big-ticket physical assets at market value

   Value your home and vehicles at what they would realistically sell for today, rather than what you paid. Skip furniture, electronics, and clothing; they’re hard to sell for anything close to what they cost.
4. 4
   Subtract every debt at its payoff balance

   Use the current payoff amount for loans and the current balance for credit cards, including charges that haven’t hit a statement yet.
5. 5
   Write it down with the date

   Record the total next to the date, then repeat the exercise next month. The second data point is where it gets useful, because that’s when you can start to see a trend.

The list from step one has a second use every winter. Nearly every account on it that paid interest or dividends, held a retirement contribution or charged mortgage interest sends a tax form, so the same list tells you which tax forms to expect and when each is due.

Step four is where most of the movement comes from early on. Paying down a balance raises your net worth by exactly what you paid, and sending that payment to the most expensive balance raises it fastest, which is the whole argument behind choosing between the avalanche and the snowball.

The list from step one has a second use once you have it. Most of the accounts on it carry a form naming who receives the balance if you die, and that form is read before any will is: which of your accounts pass to a name on file is worth checking on the same afternoon, because the hard part of it is the account list you just built.

Valuing the tricky assets

Your home

For most middle-class families, home equity is the biggest piece of wealth. In the Federal Reserve’s 2022 Survey of Consumer Finances, homeowners had a median net worth of $396,200, versus $10,400 for renters, and the median homeowner’s equity (home value minus mortgages) was about $200,000.^[3]

Because it’s so large, how you value it matters. An automated estimate (such as a Zestimate) is a sensible starting point; adjust it if you know about recent comparable sales or condition issues. Conservative trackers subtract estimated selling costs. Whatever you choose, stick with it, because switching methods creates fake gains and losses.

The estimate is only half of what a home needs on paper. The other half is what you paid for it and what you put into it since, which is the figure the gain is measured against when you sell, and the reason purchase and improvement records outlive the sale rather than the tax year they were bought in.

LumaLedger

Real estate

$106,600 equity · after $211,400 mortgage

Primary homeZestimate

Single-family · 3 bd · 2 ba

Value

$318,000

Mortgage ··3391

$211,400

Equity

$106,600

Equity over time

Your car

Cars lose value every month. Use a current private-party or trade-in estimate and refresh it a couple of times a year. Always pair the car with its loan: a $27,000 car with an $11,850 loan adds $15,150 to your net worth, rather than the full $27,000. That falling value is also the largest cost of owning the car, at an average of $4,422 a year, which is worth seeing beside the fuel and insurance: what a car really costs to own. The loan on the other side moves on its own schedule, and a long one pays the balance down slowly enough that the two can cross: what the term and the rate on a car loan cost you. If the car is ever taken for missed payments, the pairing comes apart in a way worth understanding before it happens: the asset leaves and the liability mostly does not, because the balance left after a repossession sale is an unsecured debt that survives the auction.

Retirement accounts

Include them. For many people they’re the second-largest asset. Keep in mind, though, that a traditional 401(k) or IRA balance is pre-tax, and some of it will go to taxes when you withdraw. Roth balances are generally tax-free in retirement. For context, Vanguard’s plan participants had an average 401(k) balance of $167,970 but a median of $44,115 at the end of 2025, a gap that shows how flattering averages can be.^[5]

Five mistakes that distort your number

1. Double-counting. Listing your home equity as an asset and subtracting the mortgage counts the loan twice. List either the home’s full value and the mortgage, or equity alone, but never both.
2. Stale manual values. A home value typed in three years ago can hide a six-figure swing. Put a date next to every manually entered asset.
3. Treating transfers as losses. Paying a $1,200 credit card bill lowers your checking balance and your card balance by the same amount, so your net worth stays the same. Tools that don’t pair both sides can show a phantom drop.
4. Ignoring pending transactions. Bank data isn’t final the moment you swipe. Pending charges usually post within a few business days, sometimes at a different amount (a restaurant tab after the tip, for example), and some holds never post at all.^[4]
5. Counting possessions at purchase price. Your $2,000 laptop won’t fetch anything like $2,000 once you’ve used it. Leave personal belongings out unless they have a real resale market.

Mistakes 3 and 4 are why we built LumaLedger on double-entry accounting, where every movement of money is recorded on both sides. We explain how that works in why double-entry accounting keeps your numbers honest.

Net worth by age: how you compare

The Federal Reserve’s Survey of Consumer Finances is the gold standard for household wealth data. Its latest figures, broken down by the age of the head of household, are below.^[3]

Compare yourself with the median rather than the mean. A small number of very wealthy households drag the mean up, which is why it’s roughly five times the median overall. And keep in mind that your own direction of travel matters more than any benchmark.

Net worth is one line in a larger picture. For the rest of it, from emergency savings to card balances to what people actually put away each month, we collected 43 numbers on how Americans really handle money, each one sourced.

How often to track, and how to automate it

Monthly is the sweet spot: frequent enough to catch problems and build the habit, infrequent enough that market noise doesn’t dominate. Refresh home and vehicle values quarterly. Once a year, look at the 12-month change and ask what drove it, whether that was saving, market returns, debt payoff, or depreciation.

A spreadsheet works if you’re disciplined. The catch is maintenance: it’s only as current as the last time you updated a dozen balances by hand. LumaLedger’s Net worth page stays current on its own. Linked bank, card, loan, brokerage, and retirement accounts update automatically; tax-advantaged accounts like IRAs, Roth IRAs, 401(k)s, HSAs, and 529 plans are recognized as such; homes can be valued from Zillow and linked to their mortgage; and vehicles sit next to their loans. Assets and liabilities are grouped so you can see what’s driving the total.

LumaLedger

Net worth

$286,410.22

▲ $18,240 (6.8%) · Past year

1M3MYTD1YALL

Assets$512,300

Real estate· 1$318,00062%

Retirement· 3$96,40019%

Cash· 2$42,2008%

Investments· 1$28,7006%

Vehicles· 1$27,0005%

Liabilities$225,890

Mortgage· 1$211,40094%

Auto loan· 1$11,8505%

Credit cards· 2$2,6401%

Because it’s built on a double-entry ledger, a card payment or a transfer to savings never registers as a loss, and the total always reconciles with the underlying accounts. You get the number without maintaining a spreadsheet, along with a history that becomes more useful every month.

Once you know your net worth, the next step is making sure it keeps climbing. Twenty minutes at the end of each month is the simplest routine we know for that.