Fixed Fees
Published prices for Prepared & Filed, Optimised & Protected, and Year-Round Tax Partner. No surprise hourly bills for a standard Self Assessment.
Solaratax Ltd · Self Assessment
Online Tax Return Preparation Service
The primary onboarding journey for Self Assessment and personal tax clients. Same Solaratax branding, same accountants, a client account that takes you from package choice through to the HMRC receipt.
What is included
Qualified Accountants
A named Solaratax accountant prepares the return. ACCA, CIMA or CTA training is on the file — this is not an unsupervised form dump.
Secure Document Upload
P60s, bank statements and identity papers stay in your document vault. Only you and your Solaratax accountant can open them.
HMRC Filing
You approve the computation. We file the Self Assessment and store the receipt, SA100 working copy and SA302 in the portal.
Progress Tracking
See outstanding tasks, AML status, messages and invoices from My Tax Portal on a phone or a desktop.
Tax return packages
Individuals only. Limited companies and LLPs use a separate accounts engagement. Prices are for one person’s 2025–26 Self Assessment with Solaratax Limited: £250, £325, or £25 a month. See the Self Assessment service page for who needs to file and a full comparison.
Prepared & Filed
£250
One fee for the 2025–26 tax year.
A named accountant prepares your Self Assessment and files it with HMRC after you approve it.
Best for: PAYE employees, first-time filers and straightforward personal returns
- Personal tax questionnaire with an estimated bill or refund
- Document checklist for P60, P45, savings and pensions
- Accountant review before anything goes to HMRC
- One Self Assessment for the 2025–26 tax year
- Portal messages with your accountant while we prepare the return
Most people choose this
Optimised & Protected
£325
One fee for the 2025–26 tax year.
Reliefs check, a planning review and support if HMRC writes about the year we file.
Best for: Self-employed, landlords, dividends, CIS and mixed income
- Everything in Prepared & Filed
- Reliefs and allowances review before filing
- Written summary of how the figures were reached
- HMRC letter help on the return we prepare
- Enquiry support on the year we file
Year-Round Tax Partner
£25/mo
Billed monthly, year round.
A named accountant through the year, not only at the January deadline.
Best for: Sole traders and anyone who wants an accountant on tap all year
- Everything in Optimised & Protected
- Named accountant for the tax year
- In-year questions on income, reliefs and records
- Priority review before the 31 January deadline
- Reminders for payments on account and MTD record-keeping
How the client journey works
- 1View tax return packages
- 2Create an account
- 3Open My Tax Portal
- 4Purchase a package
- 5Sign the engagement letter
- 6Complete AML / KYC checks
- 7Upload documents and the tax questionnaire
- 8Message your accountant and approve the return
- 9Download the tax return and HMRC documents
MTD for Income Tax bridging is in development. We still prepare and file the Self Assessment; the portal will hold the live HMRC receipt when those credentials are connected.
Start your 2025–26 return
Create a client account, then purchase a package in My Tax Portal.
Related services
Solaratax provides tax and accounting services across Manchester, London, and the UK. 128 City Road, London, EC1V 2NX. 01615 314179.
Questions people ask
Send an enquiry
The same form as our contact page. Write to enquiries@solaratax.co.uk or call 01615 314179 if you would rather not use the form.
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