What is net worth — and does your house count?

Net worth is everything you own minus everything you owe. Add up your assets — cash, savings, investments, pensions and (usually) your home — then subtract your debts: mortgage, loans, credit cards and finance. The number left is your net worth. In the UK most people include their home equity and pension; it can be positive or negative, and it's the single clearest measure of your financial progress.

That's the problem in a nutshell. You can't manage what you don't measure — and most people are running their finances on vibes, a rough idea of the bank balance, and the hope that things are probably fine.

I know, because for years I was one of the quiet ones. I started investing at 18 and, honestly, spent the first few years not really understanding what I owned — I just bought things and checked the balance when I remembered. I'm 28 now, nearly 29, and if I could hand my 18-year-old self one note, it wouldn't say "buy this fund." It'd say: work out your number, watch it every month, and let compounding do the slow, quietly ridiculous thing it does.

Net worth is where that starts. It's not complicated. But it changes things.

So what actually is net worth?

It's the simplest financial calculation there is: everything you own minus everything you owe.

That's it. Add up what you own. Add up what you owe. Subtract one from the other. The number you're left with is the truest one-line summary of your financial life there is.

How to work yours out (about ten minutes)

Two columns. What you own, what you owe.

On the own side: cash and savings, your Stocks & Shares ISA, any other investment or trading accounts, your pension pots (use the latest figure on the statement — an estimate is fine to start), the equity in your home if you own one, and anything sizeable you'd genuinely sell.

On the owe side: mortgage, credit cards, car finance, overdraft, personal loans, the student loan, whatever you're paying off in instalments.

Three questions come up every time.

Do I include my pension? Yes — it's your money even if you can't reach it yet, and often a big slice of the total. Leaving it out just hides what you've built.

Do I include my home? Include the equity — what it's worth minus what's left on the mortgage — not the full value. The mortgage already sits on the "owe" side, so counting the whole house would double it up.

What about the student loan? This is where UK student loans stop behaving like normal debt. You don't pay a fixed bill — you repay a percentage of whatever you earn above a threshold, and anything still outstanding gets wiped after a set period (30 years on the common post-2012 plan, 40 on the newest). So on a lot of lower-to-middle salaries the loan is never fully cleared before it's written off — it works more like a graduate tax than a debt, and that "balance" is a bit of a phantom figure. On higher salaries, where you'd clear it before write-off, it behaves like real debt and the interest genuinely costs you. That's why some people leave it out of their net worth and others keep it in. Put it in if it helps you see the full picture, and be consistent. Whether it's ever worth overpaying is a separate question that depends on your plan and your salary — one for you, and an adviser if it's a big call.

Don't overthink the small stuff. A rough, honest number beats a perfect one you never finish.

Your salary isn't the score

This is the thing that surprises people. Income is an input. Net worth is the score.

It's entirely possible to earn £70,000 a year and have a net worth of £8,000 — if your lifestyle keeps pace with your income, if you're carrying debt, if you're not investing anything. And it's entirely possible to earn £32,000 and have a net worth of £90,000 — if you've been consistent, invested regularly, and kept your debts low.

Same logic applies to the savings account balance. £15,000 in savings looks very different depending on whether you also have £40,000 in debt or £2,000 in debt. The savings balance alone tells you nothing useful.

What most people get wrong: only looking at one piece

Most people manage their money in silos. They check their bank app. They log in to their ISA provider once a year. They glance at the pension letter and put it in a drawer.

None of these individual numbers tell the full story. Your pension might be growing nicely while your credit card balance is also growing. Your ISA might be up but you haven't noticed that your car finance is eating 15% of your take-home. And if that card balance is sitting on a 0% deal, the date it reverts matters more than the balance itself — our free 0% Balance Transfer Tracker keeps that deadline from sneaking up on you.

Net worth forces you to look at everything at once. It's uncomfortable the first time. It's useful every time after that.

The bit that actually changed how I invest

Knowing your number once is a photo. Tracking it every month is a film.

For years my "system" was a spreadsheet on my desktop — net worth, a forecast, three scenarios. The maths was fine. The problem was me. I'd forget to update it for months, the forecast drifted away from reality, and I'd quietly lose the thread. (That dread-to-open spreadsheet is exactly why I ended up building a free UK net worth tracker instead.)

What fixed it wasn't willpower, it was seeing the number move. Once you watch it tick up in a month you invested, sit flat when life got expensive, dip when markets wobbled and then climb back, you build an instinct no budgeting app hands you. And you get to watch compounding happen to you, instead of just reading that it theoretically should. Compounding is the closest thing investing has to a cheat code — but it only pays out for people who stay in long enough to see it work, and tracking your number is how you stay in.

"But is my number good?"

The question everyone wants answered — and the one I'd gently talk you out of. There's no universal "good." A strong net worth for a 24-year-old still clearing student debt looks nothing like a strong one for someone in their fifties, five years from finishing work. Measuring yourself against a stranger, or a national average, mostly leaves you feeling either behind or falsely ahead, and neither helps.

If you do want the context, the average UK net worth by age — from the ONS Wealth & Assets Survey — is a fair sense-check: roughly £16k for under-25s, £110k for 25–34s and £300k for 45–54s. Just don't let a national median become your scoreboard; it's the middle household, not a target, and it says nothing about your plan.

The only comparison that's ever useful is you versus you last month, and you versus where you're heading. Is the number moving the right way? Is the trajectory one you're happy with? That's the whole scoreboard.

From tracking to forecasting

Once you have a few months of data, something more interesting becomes possible: you stop just tracking the past and start projecting the future.

Based on your actual savings rate and actual returns, you can model where you'll be in 5, 10 or 20 years. Not guessing. Not using generic assumptions from a calculator online. Your numbers, your trajectory.

That's the shift from financial awareness to financial planning — and it starts with knowing your net worth.

Where my money head comes from

I'll be honest about my influences. Like a lot of people in the UK, I grew up financially on Martin Lewis — not only the deals, but the way he takes something tangled and makes it usable for a normal person, and keeps pushing to get the unfair rules changed. That "make it understandable, keep it honest, never sell people something they don't need" spirit is a big part of why WealthR exists at all. I wrote more about that here.

A few common questions

WealthR is built around this idea. Log your investments, savings and debts once a month, and it tracks your net worth automatically, builds your personal forecast, and shows you the compounding effect of what you're doing right now. No bank linking, no ads, no subscriptions — just your numbers, actually visible.