Top Rated on Bark★★★★★
Self Assessment for Contractors, Done Right
I handle your contractor self assessment from start to finish, making sure every allowable expense is claimed and your return is filed on time.
You deal with me directly, get a fixed price upfront, and can expect a same-day response to any question you have along the way.
“Dealing with self assessments and tax returns can be very stressful. But David Roseweir in STZ Accounting made that very simple. He is approachable, efficient and very professional.”
Is your contractor self assessment on track?
Answer five quick questions and get a clear next step based on your current situation.
What I handle on your behalf
From checking your registration to filing your completed return, I manage the detail so you can focus on the work that pays you.
Self Assessment Tax Return
I prepare and file your self assessment tax return, working through your income and expenses to make sure everything that can be claimed is claimed. Whether you operate as a sole trader or a limited company director, I handle it from start to finish. You receive a fixed price before any work begins, with no hourly surprises.
Core contractor serviceCorporation Tax Return
If you contract through a limited company, your corporation tax return is a separate filing obligation from your personal self assessment. I handle both, making sure they align correctly and your liability is calculated accurately. No deadlines are missed and no figures are left unreconciled.
For limited company contractorsYear-End Accounts and Bookkeeping
Accurate year-end accounts are the foundation of a correct tax return. I keep your records in order throughout the year so there are no gaps or surprises when your filing deadline arrives. This applies whether you are a sole trader, a director, or a CIS subcontractor.
Included in monthly packagesWhy clients come back every year
Contractors need an accountant who understands their setup, responds fast, and charges a price that is clear from the start.
You always speak to David directly
There are no junior staff, no handoffs, and no call centres at STZ Accounting. When you have a question, you reach me. I know your situation and can give you a straight answer without needing to pass you on to someone else.
Fixed prices with no hidden extras
You receive a clear, agreed price before any work starts. I do not charge by the hour or add costs once a scope is agreed. That means you can plan your finances without worrying about what the invoice will look like.
25 years of real business experience behind the advice
Before qualifying as an accountant, I spent over 25 years working in real businesses. I understand the pressures contractors face because I have navigated similar ones myself. That experience shapes every conversation, not just the numbers on a return.
How it works
Getting your contractor self assessment sorted is a straightforward four-step process.
Book a free call
We spend around 20 minutes on the phone going through your situation. I find out how you contract, what income you have received, and whether there is anything specific we need to address. No paperwork required at this stage.
Receive a fixed price quote
After our call, I send you a clear, fixed price quote for the work ahead. You know exactly what you are paying before anything starts. No hourly rates and no extras added later.
Send me your records
You share your income figures, expenses, and any relevant documents. I work through them, ask any questions I have, and make sure every allowable expense is captured before preparing your return.
Review, approve, and file
I send you a draft of your self assessment return to review. Once you are happy with it, I file it with HMRC on your behalf and send you confirmation. That is it done for another year.
Ready to get this sorted?
Pick the option that feels right and take one step forward today.
Common questions
AAT qualified accountant based in Strathaven. Personal, one-to-one accounting for small businesses and sole traders across the UK.