How to track your net worth without fooling yourself
What to count, what to leave out, how often to update, and the four errors that quietly inflate the number.
Net worth is everything you own minus everything you owe, measured on one date. The arithmetic is trivial; the judgement calls are where people go wrong. Count assets at what you would actually receive, not what you paid or what you hope. Count every liability at its current payoff balance. Update linked accounts as often as you like but re-value illiquid things like property on a slow schedule, because a number you revise upward whenever you feel optimistic is not a measurement. Most people should look monthly: frequently enough to catch a trend, rarely enough that market noise does not read as progress.
What counts as an asset
An asset is something you could convert to cash. The test is not whether it has value to you. It is whether someone would pay you for it, and roughly how much. That rules out a great deal of what people are tempted to include, and rules in a few things they forget.
- Cash: checking, savings, money market, certificates of deposit.
- Investments: brokerage accounts, retirement accounts, employer stock, crypto.
- Property: your home, land, vehicles, valued at what they would sell for today, not what you paid.
- Private holdings: equity in a business, LP commitments, private stock. Hard to value, and excluding them because they are hard is its own distortion.
- Valuables only if you would genuinely sell them and know the market: jewellery, collections, equipment. A number you cannot defend does more damage than leaving the item out.
What counts as a liability
Every liability goes in at its current payoff balance: what it would cost to clear the debt today, not the original loan amount and not this month's payment. Mortgages, auto loans, student loans, credit card balances, personal loans, and any money you owe an individual.
The one people leave out is the credit card they pay in full every month. If there is a balance on the statement today, it is a liability today, however responsible the habit behind it.
Total net worth versus liquid net worth
These are two different numbers and the difference is the whole point. Total net worth counts everything. Liquid net worth counts only what you could reach in a few days without selling your house or your car.
The part that trips people up: when you remove an illiquid asset you must remove the debt secured against it at the same time. Dropping the house but keeping the mortgage makes your liquid net worth look catastrophic; keeping the house but dropping the mortgage makes it look imaginary. The asset and its secured loan move together or the number is meaningless.
How often to update it
Monthly, for almost everyone. Daily tracking turns market noise into emotional events. A 2% market move is not news about your life, but checked daily it feels like news. Quarterly is too sparse to catch a trend while you can still act on it.
- Linked accounts update themselves; there is no cost to them being current.
- Property and vehicles: once or twice a year. Re-valuing a house whenever you feel good about the market is how a tracker becomes a mood ring.
- Private holdings: at a funding round, a valuation event, or annually. Not on a hunch.
- Pick a day of the month and keep it. Comparing the 1st to the 28th smuggles a month of market movement into what looks like a clean comparison.
Four errors that quietly inflate the number
- Counting an asset gross while its secured loan sits somewhere else, or is missing entirely. A $400,000 house with a $310,000 mortgage is $90,000 of net worth. Recorded as an asset alone it is a $310,000 error.
- Double-counting money market funds. A money market position often appears BOTH as a holding in your brokerage and inside that account's cash balance. Add the cash total to the positions total and you have counted it twice. This is a real and widespread aggregation trap, not a hypothetical one.
- Valuing property at the number you would like. Zillow, a recent comparable sale, or a formal appraisal are defensible. A round number that only ever moves upward is not.
- Counting money that is already spoken for. Taxes owed on an unfiled return, a settlement you have agreed to pay, a bonus you have not received. Accrue the obligations; do not accrue the hopes.
Doing it by hand versus linking accounts
Linking is read-only in every mainstream tracker: these tools aggregate balances, they cannot move money. The real trade is not security so much as accuracy versus effort. A linked account is right every day without you thinking about it. A manual one is right on the day you updated it and drifts quietly afterwards.
A spreadsheet is a perfectly good tracker and costs nothing. Its weakness is that it records what you remember to type, so the accounts you check least (the old 401(k), the HSA) are the ones that go stale, and those are frequently the ones growing fastest. Whichever route you take, the discipline that matters is the same: one date, one method, applied the same way every time.
Investments split across several firms are the case where the choice stops being a matter of taste. Holdings held at different brokerages have to be merged by security rather than by account before allocation or cost basis mean anything, and there are two tax traps that live specifically in the gap between firms. If that is your situation, start with tracking investments across multiple brokerages instead. It is also worth checking which institutions a tracker can reach before you commit to one.
Common questions
Should I include my house in my net worth?
Yes, at what it would sell for today, with the mortgage recorded as a liability against it. The two must be entered together. Counting the house without the mortgage overstates your position by the full loan balance, which is the largest single error in most home-owning net worth calculations.
What is a good net worth for my age?
Age benchmarks are wide distributions rather than targets, and any single number quoted without a data source and a year should be treated as decoration. Compare yourself to your own trend line first: the direction and slope of your own net worth over twelve months tells you more about your finances than a percentile does.
How often should I check my net worth?
Monthly suits almost everyone. Daily checking turns ordinary market movement into emotional events without giving you anything to act on, and quarterly is usually too sparse to notice a trend while you can still change it. Pick a fixed day of the month and use the same day every time, so you are not comparing readings taken weeks apart in the market cycle.
Does net worth include retirement accounts like a 401(k)?
Yes. A 401(k) or IRA is an asset you own even though you cannot access it yet, and it belongs in the total at its full balance. Some people prefer to discount it for the tax that will be due on withdrawal. Either approach is defensible as long as you apply it consistently, because a figure calculated differently each time cannot be compared with itself.