What is the best business structure for a Horsham start-up, sole trader or limited company?

It depends on your income, risk level, and growth plans. Sole traders are simpler to run but you are personally responsible for business debts, while a limited company is a separate legal entity with more reporting but can offer more protection.

What is the difference between a sole trader, partnership, and limited company in the UK?

A sole trader is you trading personally, a partnership is two or more people running the business together, and a limited company is a separate legal body. The options differ mainly in personal liability, admin requirements, and how profits are taxed.

How do I register my new business with HMRC or Companies House?

If you are a sole trader or in a partnership, you usually register for Self Assessment with HMRC. If you choose a limited company, you register the company with Companies House and then set up the right HMRC registrations for taxes that apply to you.

Do I need a separate business bank account when I start trading?

If you run a limited company, a separate business bank account is strongly recommended because the company is legally separate from you. Even as a sole trader, keeping a dedicated account makes it much easier to track income, expenses, and tax.

What accounting software should a start-up use to stay compliant with VAT and Making Tax Digital?

Choose cloud accounting software that is Making Tax Digital ready, supports bank feeds, and lets you capture receipts and track mileage easily. This setup helps you see cash flow and who owes you money, and it reduces errors from manual spreadsheets.

Horsham Start Up Accounting Checklist and Key Deadlines

Start Your Horsham Start-up with Confidence

Getting the numbers right in the first few months of a new business makes everything else easier. Good choices at the start help your cash flow, keep tax bills from becoming a shock and stop paperwork from eating into your evenings and weekends.

Those early accounting decisions often feel less exciting than branding or winning your first client, but they shape how stressful or smooth your first year will be. The first 90 days are when you lock in habits, systems and deadlines that either support you or trip you up later.

We are NFH Accountancy, a Horsham-based chartered accountancy practice, and we work with start-ups and small businesses across West Sussex and beyond. Our aim with this checklist is to give you a clear, realistic path from idea to fully compliant business, so you can focus on growing, not guessing.

Choose the Right Business Structure From Day One

Before you send an invoice or buy stock, you need to decide how your business will be set up. This choice affects your tax, how much admin you have and how much personal risk you take on.

In simple terms, the main options are:

Sole trader: you and the business are the same legal person

Partnership: two or more people running the business together

Limited company: a separate legal body, usually ending in Ltd

Here are some quick differences to think about:

Liability: as a sole trader or partner, you are personally on the hook for business debts, a limited company can give more protection

Admin: sole traders have simpler reporting, limited companies must file accounts and other reports to Companies House and HMRC

Tax: profit is taxed differently for each option, which structure works best depends on your income level and plans

Perception: some clients, especially bigger ones, may prefer working with a limited company

Local factors around Horsham also matter. For example:

Many local trades and one-person consultancies start as sole traders, as they are quick to set up

Product-based and fast-growth businesses might prefer a company from the start

Cost of living and home working can affect how you want to pay yourself and claim costs

At this stage you usually need to:

Set up a separate business bank account, especially if you are a company

An accountant helps you here by:

Estimating likely tax bills for each structure so you can compare

Picking a sensible year-end that fits your trade and cash patterns

Handling registrations correctly so you do not face delays or penalties later

Set up Smart Systems and Software Before Trading

Getting your accounting software sorted before your first sale saves a lot of stress. Trying to rebuild six months of invoices and receipts from memory is no fun and often leads to errors.

Good software for small businesses should give you:

Making Tax Digital ready tools for VAT and future income tax changes

Bank feeds so transactions appear automatically

Simple mileage and expense tracking

Receipt capture from your phone so you can bin the paper

Clear reports showing profit, cash flow and who owes you money

Cloud tools work well for start-ups using accounting services in Horsham, because you and your accountant can see the same data at the same time. That makes support faster and saves long email chains with spreadsheets attached.

When we set up systems with new clients we usually:

Match the software to your sector, for example trades, online retail or consulting

Build invoice templates with your logo, terms and local details

Create a simple chart of accounts so your income and costs are grouped clearly

Agree how often you will send receipts and review reports

Because we stay easy to contact, we can tweak things as your business changes. If you move from side-hustle to full-time, add staff or add an online shop, your setup can grow with you instead of holding you back.

Understand CIS, VAT and PAYE Triggers Early

Some taxes only kick in when you hit certain points. Knowing these triggers before you start trading helps you avoid nasty surprises and rushed applications.

For trades and construction work around Horsham and West Sussex, the Construction Industry Scheme, or CIS, is often important. In simple terms:

Contractors must register and often deduct tax from payments to subcontractors

Subcontractors can also register so they get the right rate of deduction

CIS applies to most construction-type work, not just big building sites

VAT is another key area. You must register for VAT when your taxable turnover goes over the current threshold in any 12-month period. Things to think about include:

Busy periods, for example summer work, can push you over the line faster than you expect

Voluntary registration can sometimes help with reclaiming VAT on costs

On the other hand, adding VAT to your prices might affect what customers are willing to pay

PAYE comes into play when you pay anyone through payroll, including yourself if you take a salary from a limited company. This brings:

Income tax and National Insurance to calculate and pay over

Auto-enrolment pension duties once you reach certain levels

Important forms and regular reports to HMRC

If that sounds a lot, it is because it is. This is where adjustable support makes a difference. Some owners only need one-off help to get registered, others prefer ongoing handling of returns so they can stay focused on winning and delivering work.

Your First 90 Days: a Simple Compliance Timeline

To keep things practical, here is a simple 90-day plan many Horsham start-ups can follow. You can adjust it to your business type and speed.

Weeks 1 to 4:

Decide your structure with advice where needed

Open a business bank account and keep it separate from personal spending

Choose and set up your accounting software, including bank feeds

Weeks 5 to 8:

Create invoice templates with clear payment terms

Agree expense categories so similar costs are grouped

Start a weekly bookkeeping habit, even if it is only 30 minutes

Review whether CIS, VAT or PAYE might apply as income begins to build

Weeks 9 to 12:

Have your first management review with an accountant, even if short

Look at cash flow, not just profit, and plan for quieter months

Start putting money aside regularly for tax in a separate savings pot

Check deadlines for self-assessment or corporation tax, and plan backwards

Many people launch during summer when the weather is better and events are busy. That can mean your first self-assessment deadline lands sooner than you expect. Planning your 90 days with that in mind keeps January from becoming a panic month.

Work with a Local Expert and Stay Ahead All Year

Treat this checklist as a living tool. You can return to it at each stage of your first year to check what you have covered and what needs attention next. No start-up gets every decision right straight away, and that is fine.

Using local accounting services in Horsham means you have a named person to ask when questions pop up, rather than spending hours searching online. At NFH Accountancy we keep our support personal, easy to contact and adjustable, so you can start with the basics and build up to fuller advisory help as your business grows and your needs change.

Take Control Of Your Finances With Local Expert Support

If you are ready to make your numbers work harder for you, our tailored accounting services in Horsham are designed to give you clarity and confidence. At NFH Accountancy, we take the time to understand your goals so we can provide practical advice, not just reports. Start a conversation with our team today and see how we can support your business or personal finances, or simply contact us to book a no-obligation discussion.

Horsham Startup Accountant Checklist: Setup, Software, CIS/VAT/PAYE, 90 Days