The tagline of The Self Employed Club is “keep more of what you earn.”

Not earn more. Keep more.

Because the truth of self-employment is that earning isn’t the problem for most sole traders. The problem is the gap between what comes in and what you actually have left after tax, costs, subscriptions, tools, insurance, and everything else.

This post is about closing that gap. It covers every lever available to a UK sole trader — tax, expenses, costs, banking, tools, and money habits — with practical steps for each one. It’s the post I wish someone had given me at the start.

One more thing before we get into it: The Self Employed Club exists specifically for this. Free membership, handpicked deals on the tools and services UK sole traders already pay for. If you haven’t joined yet, do it after reading this — it’s the easiest win on this entire list.

Why “Earning More” Isn’t Always the Answer

Most business advice focuses on growth: more clients, higher rates, bigger revenue. And those things matter. But they’re not the whole picture.

If your costs grow as fast as your income, you’re on a treadmill. If you’re not claiming every allowable expense, you’re handing money to HMRC unnecessarily. If you’re paying full price for tools you could get discounted, or auto-renewing insurance without shopping around, you’re leaving money on the table every month.

Keeping more of what you earn doesn’t require earning more. It requires being deliberate about where it goes.

Here are the areas that make the biggest difference.

1. Claim Every Allowable Expense

This is the highest-impact, lowest-effort thing most sole traders can do — and many don’t do it properly.

Every legitimate business expense you claim reduces your taxable profit. Lower profit means lower Income Tax and lower Class 4 National Insurance. On £10,000 of properly claimed expenses, a basic rate taxpayer saves over £2,600 in tax. That’s not a rounding error — that’s real money.

The expenses most commonly missed:

• Home office costs — the flat rate is £10–£26/month depending on hours worked from home. Takes five minutes to calculate and HMRC won’t question it
• Mileage — 45p per mile for the first 10,000 business miles each year. On 200 miles a month that’s over £1,000/year in deductible expenses
• Equipment and tech — laptops, phones, cameras, tools — anything used for the business
• Software and subscriptions — every tool you pay for to run the business
• Training — courses that develop skills relevant to your current work
• Professional fees — your accountant, any legal advice for business matters

The fix is simple: track expenses as they happen, not at tax return time. A 20-minute monthly routine is all it takes.

Read => Allowable Expenses for Sole Traders: The Full List

2. Get Your Tax Right — and Not Overpay

Understanding how self-employed tax actually works means you only pay what you owe — not more.

A few things worth knowing:

Your personal allowance is £12,570. You pay no Income Tax on profits up to this amount. Make sure you’re not confusing turnover with profit — you’re taxed on profit after expenses.

Set aside 25–30% of every payment you receive. Put it in a separate pot immediately. This isn’t optional — it’s the most important financial habit in self-employment. The people who struggle with tax bills are almost always the ones who didn’t do this.

Payments on account catch new sole traders off guard. Once your tax bill exceeds £1,000, HMRC requires advance payments towards the following year — meaning in your first January, you could owe up to 150% of your annual bill at once. Knowing this is coming means you can plan for it.

File your return early. You don’t pay earlier just because you file earlier — but you know your bill months in advance and can plan. January is stressful enough without doing the return at the same time as paying.

Read => Self-Employed Tax: How It Works and What You Need to Know

3. Use MTD-Compatible Accounting Software

If you’re still doing your books on a spreadsheet (or not doing them at all until January), accounting software is the single upgrade that changes everything.

Good accounting software:

• Imports your bank transactions automatically — no manual data entry
• Categorises expenses as you go — nothing falls through the cracks
• Keeps your records MTD-ready — important now if you earn over £50,000, coming for everyone else
• Produces clean profit and loss reports — so your tax return is straightforward, not a scramble
• Gives you a real-time view of your finances — so you always know where you stand

The time it saves across a year is significant. And the money it saves — through properly tracked expenses and less accountant time fixing messy records — typically more than covers the cost.

Club deal: Members of The Self Employed Club get 90% off Xero for 6 months — one of the most popular MTD-compatible accounting tools for UK sole traders. Grab the deal here →

Read => Xero for Sole Traders: Is It Actually Worth It?

4. Open a Business Bank Account (and Use It Properly)

A separate business bank account is not a legal requirement for sole traders. But it is one of the most practically useful things you can do.

When business and personal finances are mixed, you can’t see clearly what you’re earning or spending. Expenses get missed. Tax returns take longer. And there’s always that low-level anxiety of not being entirely sure which money is yours and which is earmarked for HMRC.

Take a read of our full guide to the best free business bank accounts.

A dedicated business account fixes all of this. You see exactly what the business earns and spends. Your bookkeeping is clean. Your tax return is straightforward.

And the best part: some of the best business bank accounts for sole traders are completely free. No monthly fee, no minimum balance — just a clean separation between your business and personal money.

Check for current business banking deals in The Self Employed Club →

5. Audit Your Subscriptions Every Quarter

Most sole traders are paying for at least one tool they’ve forgotten about. The direct debit goes out, the subscription renews, and nobody notices.

The fix is a quarterly subscription audit — not from memory, from your bank statements. For every recurring payment, ask: have I used this in the last 30 days? Is it actually saving me time or money? Could I get the same thing cheaper or free?

Cancel anything that doesn’t pass the test. You can always sign up again if you miss it. In my experience, you rarely do.

The annual cost of monthly pricing is easy to forget:

• £20/month = £240/year
• £30/month = £360/year
• £50/month = £600/year

Stack several unnecessary subscriptions together and you’re looking at £1,000+ leaving your account each year on things you’ve stopped noticing.

For day-to-day running of the business — email, calendar, file storage — I use Google Workspace. The domain email was one of the first things I set up and the calendar booking feature has saved more time than almost any other tool I use.

Read => How to Cut Business Costs as a Sole Trader

6. Stop Auto-Renewing Everything

Loyalty rarely pays in business. Insurers, phone companies, software providers — all of them offer better deals to new customers than they give existing ones.

Before any annual renewal:

• Get a comparison quote
• Ring your current provider and ask for a better deal
• Switch if they won’t budge

This applies to:

• Business insurance (professional indemnity, public liability)
• Phone and broadband contracts
• Software subscriptions
• Any annual service or tool

Twenty minutes of comparison shopping at renewal time consistently saves money. It’s not exciting, but it’s real.

Club deal: Before you renew anything, check The Self Employed Club deals page — handpicked discounts on the things sole traders pay for regularly. Browse deals →

Read => Business Insurance for Sole Traders: What You Actually Need

7. Price Yourself Properly

This one cuts both ways.

Underpricing is one of the most common ways sole traders lose money — and one of the hardest to fix because it feels like a sales problem when it’s actually a mindset one. If your rates don’t account for the full cost of running your business (admin time, tools, taxes, downtime between projects), you’re subsidising your clients from your own pocket.

When setting your rates, build in:

• Tax — roughly 25–30% of your profit will go to HMRC
• Tools and subscriptions — your monthly operating costs
• Non-billable time — admin, marketing, invoicing, business development
• Quiet periods — you won’t bill every working day, every month

A day rate that sounds good on a full-time employment comparison often looks very different once you factor all of this in.

Raising your prices is also one of the most direct ways to keep more of what you earn. If you haven’t reviewed your rates in over a year, it’s probably overdue.

8. Start a Pension — and Get the Tax Relief

This is the one most sole traders leave on the table the longest — and the one with the most compounding benefit over time.

Pension contributions come with 20% basic rate tax relief added by the government automatically. If you’re a higher rate taxpayer, you can claim another 20% back through your Self Assessment return. That means every £80 you contribute becomes £100 in your pension pot — a guaranteed 25% return before the money is even invested.

For sole traders, pension contributions are also one of the most tax-efficient ways to manage a high-profit year: contribute more in a bumper year to reduce your taxable income, using carry-forward allowances from previous years if needed.

The earlier you start, the harder compound growth works for you. Even small, regular contributions make a significant difference over a decade.

Read => Self-Employed Pensions: What You Need to Know

9. Think About Business Structure at the Right Time

Most sole traders are in the right structure — for now. But understanding when it might make sense to change is part of managing your money well.

A limited company can be tax-efficient once your profits consistently exceed £50,000–£60,000 — but the admin costs (accountant fees, Companies House filing, extra complexity) mean it’s rarely worth it before that point. The decision is worth revisiting as your business grows, with proper professional advice on your specific numbers.

For now: being a sole trader is perfectly fine, and the suggestion that everyone should incorporate immediately is almost always wrong.

Read => Sole Trader vs Limited Company: Is It Worth Incorporating?

10. Use the Deals That Already Exist

This is the simplest one on the list — and the most overlooked.

There are deals, discounts, and exclusive offers available to sole traders on the tools, services, and products you already pay for. Most people don’t know about them because they’re not in one place and nobody’s told them.

That’s exactly what The Self Employed Club is for.

Free membership. Handpicked deals on accounting software, banking, insurance, cashback, and more — all negotiated specifically for UK sole traders. No catch, no upsell, no spam.

Joining takes two minutes. Checking the deals before you renew or sign up for anything takes less. It’s the lowest-effort item on this entire list.

Join The Self Employed Club free and start keeping more of what you earn →

The Summary: 10 Ways to Keep More of What You Earn

FAQs

How do sole traders keep more of what they earn?

By claiming every allowable expense, understanding their tax obligations, keeping costs lean, pricing properly, and taking advantage of deals on the tools they already use. The Self Employed Club brings the deals together in one place — free to join.

What expenses can sole traders claim to reduce their tax bill?

Software, equipment, home office costs, mileage, insurance, professional fees, marketing, training, and more. See the full list here →

How much tax does a sole trader pay?

Income Tax at 20% on profits between £12,570 and £50,270, rising to 40% above that, plus Class 4 NIC at 6%/2%. On £40,000 profit, your combined bill is around £7,132. Full guide to self-employed tax →

Should I get accounting software as a sole trader?

Yes — it saves enough time and catches enough missed expenses to pay for itself. Members of The Self Employed Club get 90% off Xero for 6 months →

When should a sole trader consider a limited company?

When profits consistently exceed £50,000–£60,000 and when the tax saving exceeds the additional accountancy and admin costs. Full comparison here →

What is The Self Employed Club?

A free, members-only platform with handpicked deals and discounts on the tools, services, and products UK sole traders already use. Built by Anita, a Chartered Accountant who went self-employed herself. Join free →