Always know the number
A running tax estimate you can trust
Every invoice and expense updates a live figure for what you'll owe — so the bill is never a shock and you can set the right amount aside as you go.
Live VAT & income-tax estimate
Auto set-aside as you get paid
No more year-end guesswork
Estimated tax owedOn track
£4,218.60
Self Assessment · due 31 Jan 2025
£1,684 already set aside this month
The full VAT return
Your 9-box return, filled in for you
Spiral builds the complete MTD VAT return from your data — all nine boxes in HMRC order, Box 5 called out — ready to check and submit in a few taps.
All 9 boxes, HMRC order
Auto-flips pay vs reclaim
Submitted digitally, recognised by HMRC
Never miss a date
Every deadline, tracked for you
A personalised calendar of your VAT and Self Assessment dates, with reminders that land in good time — so filing is calm and on schedule, every quarter.
Personalised deadline calendar
Timely reminders before each date
Self Assessment & VAT in one place
Your 2026/27 deadlines
7
Aug
5
Oct
7
Nov
31
Jan
Three steps
Tax, on autopilot
1
Track
Spiral estimates your tax live as money moves through your business.
2
Set aside
The right amount is ring-fenced automatically, so it’s always covered.
3
File
Submit VAT and Self Assessment straight to HMRC — recognised and compliant.