01
Return preparation & filing
We prepare your full Self Assessment return, review it with you, and submit it electronically to HMRC well ahead of the deadline.
Self Assessment,
sorted properly.
Take the stress out of your annual tax return with accurate, on-time submissions and clear advice on what you owe and why.
Accurate, on time, HMRC-ready
Self Assessment support that removes the annual panic.
Self Assessment is the way HMRC collects tax from people whose income isn't taxed at source. If you're a sole trader, landlord, company director, or you have investment or side income, you'll usually need to file a return each year. It sounds simple until you're wrestling with allowable expenses, dividend rules and payments on account the night before the deadline.
At Calibra, we prepare and submit your Self Assessment return end-to-end. We gather the information we need, apply the reliefs and allowances you're entitled to, calculate what you owe, and file with HMRC well ahead of the 31 January deadline. You get a clear picture of your position, no surprises, and a real person to speak to when something changes.
Get started with your Self AssessmentAccurate returns
Every figure checked, every relief considered, and every entry mapped back to a source document before we file.
Filed on time
We plan your return well before 31 January, so late-filing penalties and last-minute stress stay off the table.
No tax paid twice
We claim the allowances, expenses and reliefs you're entitled to, so you're not leaving money with HMRC that should stay with you.
HMRC in the background
We deal with HMRC on your behalf, from registration to correspondence, so you don't have to sit on hold or decode their letters.
Our Self Assessment service
Everything you need to file with confidence.
02
Tax calculation & planning
A clear breakdown of what you owe, when it's due, and how payments on account work, plus practical planning for the year ahead.
03
Sole trader & landlord income
Self-employment, rental and property income handled correctly, with the right expense treatment and capital allowances applied.
04
Directors, dividends & side income
Dividends, salary, benefits in kind, savings and investment income pulled together into one accurate, coherent return.
05
HMRC registration & correspondence
From Self Assessment registration and UTR setup to responding to HMRC queries, we handle the admin so you don't have to.
Not sure if you need to file?
Tell us about your income and situation. We'll come back with a clear view on whether you need to file and what it would cost.
Get in touchWhy Calibra
The reason clients trust us with their tax returns.
Expertise
Seasoned professionals with in-depth knowledge of UK personal tax, allowances and the rules HMRC actually applies.
Personalised approach
We take the time to understand your income, circumstances and goals, so your return reflects your real position, not a template.
Proactive support
We flag planning opportunities early, from pension contributions to timing of income, so tax decisions aren't left until January.
Transparent pricing
Clear, competitive pricing with no hidden fees, so you can plan your finances with confidence.
How we work
A simple, four-step engagement.
From first conversation to filed return, our process is clear, collaborative and built around your situation.
- Step 01
Consultation
We start by understanding your income sources, circumstances and any prior returns, so our approach is grounded in your reality.
- Step 02
Information gathering
We send a clear checklist of what we need, chase what's missing, and take the guesswork out of the paperwork side.
- Step 03
Preparation & review
We prepare your return, calculate your tax, walk you through it in plain English, and answer any questions before filing.
- Step 04
Filing & ongoing support
We submit to HMRC ahead of the deadline and stay on hand for payments on account, HMRC letters and next year's planning.
FAQ
Frequently asked questions about Self Assessment
Get in touch
Want more on our Self Assessment service?
Submit our short form and we'll follow up with a tailored overview. If you'd prefer to speak to us directly, you can use the link below to book a call.
Book a callRelated reading
More on personal tax, self-employment and staying on top of HMRC
Practical guides and thinking from the Calibra team, picked to go alongside Self Assessment.
