Thinking about starting your own business but wondering whether you should actually leave a secure job to do it?
That’s one of the biggest decisions anyone weighing up self-employment ever has to make, and it’s also one of the most poorly answered questions on the internet.
Half the content out there tells you to “take the leap”, usually written by someone who either had a partner covering the mortgage or is trying to sell you a course. The other half is so cautious it tells you never to try anything unless you’ve got a year’s salary in the bank and a business already turning a profit.
Neither answer is much use to somebody actually sat at the kitchen table trying to work it out.
We’ve had this conversation with a lot of people over the years, some who quit and it worked, some who quit and it didn’t, and plenty who never quit at all and built something brilliant on the side instead. This is our honest attempt to help you think it through, rather than romanticise it or scare you off it.
Before We Go Any Further
This is simply our view.
There’s no universal right answer here. It depends on your finances, your idea, and your appetite for risk. Someone with no dependents and three months of rent saved is in a completely different position to someone with a mortgage, two kids and a partner who also needs to keep working.
Have a look around, speak to people who’ve actually done it, and make your own judgement. What follows is simply how we see it, based on what we’ve watched happen.
Is This Actually a Financial Decision, or a Fear Decision?
It’s usually both, and it helps to separate them.
A lot of people frame “should I quit my job” purely as a financial calculation. Can I afford it? What’s my runway? Those are genuinely important questions and we’ll come to them.
But underneath the spreadsheet, there’s often a second question nobody says out loud: am I scared of staying, or scared of leaving?
Some people want to quit because the idea genuinely excites them and they’ve tested it enough to believe in it. Others want to quit because they hate their job and the business idea has become an escape route rather than a genuine opportunity. Those are very different starting points, and they lead to very different decisions.
“If the honest answer is ‘I just want out of my job’, fix that problem on its own terms first. Don’t dress it up as entrepreneurship.”
Neither motivation is shameful. But it’s worth being honest with yourself about which one is actually driving the decision, because it changes how much risk is sensible to take on.
What’s a Sensible Financial Runway Before You Quit?
Longer than most people plan for, and it should be based on your actual outgoings, not a rough guess.
The number people throw around most often is three to six months of expenses saved. In our experience, that’s the bare minimum, not a comfortable target. It assumes the business starts generating meaningful income almost immediately, which for most people it doesn’t.
A more realistic approach: work out your genuine monthly outgoings, mortgage or rent, bills, food, insurance, everything, and then work out how many months you could survive on savings with zero income from the business. If that number makes you nervous, that’s useful information. It doesn’t mean don’t do it. It means you need to either build the runway further or test the idea first while still employed.
To be fair, some businesses need almost no capital and generate income quickly. Others take a year or more before they’re reliably profitable. The runway question only makes sense once you’re honest about which type you’re actually building.
Should You Test the Idea Before You Quit?
Yes, wherever it’s genuinely possible. This is the bit we’d push back on hardest when people jump straight to “should I quit”.
If your business idea can be tested alongside a day job, evenings, weekends, early mornings, then test it before you leave anything. Get a handful of real paying customers. See whether people actually want what you’re offering, not just whether your friends think it’s good.
This does two things. First, it tells you whether there’s genuinely a market, without betting your income on a guess. Second, it starts building the thing that actually makes quitting sensible: some early proof that people will pay.
“I’ve watched people quit a stable job for an idea that had never made a single sale. That’s not bravery, that’s a guess with your mortgage attached to it.”
Not every business can be tested part time. Some genuinely need full attention from day one, particularly anything requiring significant upfront investment or licensing. That’s a smaller category than most people assume, though. Most ideas can be tested in some smaller, quieter form first.
Does Your Personal Situation Change the Answer?
Completely, and this is where a lot of the online advice falls apart because it treats everyone as though they’re in the same position.
Somebody in their early twenties with no dependents, no mortgage and low fixed costs can afford to take a genuinely bigger swing. If it goes wrong, the downside is a difficult year and a return to employment, not a threat to a family’s home.
Somebody with a mortgage, a partner relying on that income, or children to provide for is carrying a very different level of risk. That doesn’t mean they should never do it. It means the margin for error is smaller and testing the idea properly matters more, not less.
Here’s a hypothetical, to make the point concrete. Imagine two people with the exact same business idea. One is 24, renting a room, no dependents. The other is 41, with a mortgage, two children and an income the household relies on. The idea being identical doesn’t make the decision identical. The first person can reasonably take more risk on gut feel. The second owes it to their family to build more proof first.
None of this is about who wants it more. It’s about what each person can actually afford to lose while they find out.
When Is Going All-In Actually the Right Call?
When you’ve got genuine evidence the idea works, and staying employed is now the thing slowing it down, not protecting you.
There’s a point some businesses reach where the day job stops being a safety net and starts being an obstacle. Real orders are coming in that you can’t fulfil properly around a full-time role. Customers wait longer than they should. Opportunities get missed because you simply don’t have the hours.
That’s usually the point where quitting stops being a gamble and starts being the obvious next step. You’re not betting on an idea anymore, you’re backing something that’s already showing it can work, and removing the last constraint on it.
When Is It Romanticised Nonsense?
When there’s no evidence, no runway and no real customers, and the plan relies entirely on things working out.
This is the version sold constantly online: quit tomorrow, follow your passion, the universe rewards bold decisions. It’s a lovely story. It’s also survivorship bias in a nice outfit. For every person who quit with nothing and made it work, there are plenty more who had to go crawling back to a job market that had moved on without them.
“Go for it. Genuinely, go for it. Just don’t remortgage the house because somebody on social media told you passive income is easy and quitting your job is the first step.”
Ambition is brilliant, and we’d encourage almost anyone with a genuine idea to explore it properly. The problem isn’t ambition. It’s skipping every sensible check because waiting feels unromantic.
So, What Should You Actually Do?
If you’re genuinely weighing this up right now, here’s how we’d approach it.
- Work out your actual monthly outgoings and how many months you could cover with zero business income.
- Be honest about whether you’re running towards the idea or away from the job.
- Test the idea alongside your current work wherever that’s realistically possible.
- Get real evidence, actual paying customers, not just encouraging feedback from friends.
- Factor in who else depends on your income before you set a timeline.
- Set a specific, honest trigger point for quitting, based on evidence, not a feeling.
- Talk it through with somebody who has actually done this before.
- Once the evidence is there and the job is genuinely holding you back, don’t sit on it too long either.
None of this removes the risk entirely. Starting a business is always a risk. This just means you’re taking a calculated one, rather than a hopeful one.
Frequently Asked Questions
How much money should I save before quitting my job to start a business?
There’s no single figure that suits everyone, but treat three to six months of full living expenses as a bare minimum. Base it on your actual outgoings, and lean towards a longer runway if you have dependents or a mortgage.
Should I test my business idea before quitting?
Wherever possible, yes. Testing the idea alongside your current job, even in a small way, gives you real evidence about whether people will pay for it before you risk your income on it.
Is it ever right to quit with no financial cushion at all?
Rarely. It depends heavily on personal circumstances. Someone with low fixed costs and no dependents can absorb more risk than someone supporting a family. Either way, zero cushion combined with zero evidence is one of the riskiest versions of this decision.
How do I know if my job is actually holding my business back?
A common sign is turning down or delaying genuine paying work because you don’t have the hours to deliver it. If real demand exists and the day job is the bottleneck, that’s a different situation to quitting on hope alone.
What if I have a mortgage and a family to support?
The margin for error is smaller, so build a longer runway, test the idea more thoroughly, and talk it through with anyone else the decision affects before making the leap.
Is it better to build a business slowly on the side rather than quit straight away?
For most people, yes, particularly where the idea can be tested part time. It reduces the financial risk while still giving you real evidence about whether the business works.
Our Final View
We think leaving a job to build something of your own can be one of the best decisions somebody makes. We’ve watched it change people’s lives.
We also think it gets sold online as far braver and simpler than it actually is, with barely a mention of runway, dependents or what happens if the idea takes longer than expected.
Our view is fairly simple. Test what you can before you quit. Be honest about your finances and who else the decision affects. Look for actual evidence the idea works, not just enthusiasm for it. If the evidence is there and the job is genuinely getting in the way, don’t be afraid to make the jump.
Go for it. Just go in with your eyes open.
Weighing Up a Similar Decision?
If you’re sat trying to work out whether now is the right time to leave a job and go all in on your own idea, give us a call.
You don’t need a polished plan or a finished business. Sometimes it just helps to talk it through with somebody who has watched this decision play out plenty of times before, both ways.
Pick up the phone and have a chat with us. We’re always happy to talk it through.