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taxontime

UK tax deadline calculator & trackerYour tax deadlines.All in good time.

Generate my deadlinesSee how it works

Find the dates that matter to your business and keep your next deadline in sight.

What TaxOnTime tracks

Every date is labelled as something you file, something you pay, or both.

  • 01Corporation TaxPayHMRC
  • 02Annual accountsFileCompanies House
  • 03Confirmation statementFileCompanies House
  • 04VATFile & payHMRC
  • 05PAYEPayHMRC
  • 06CISFileHMRC
  • 07Self AssessmentFile & payHMRC

Running a businessis enough tokeep track of.

Give important dates a clear place in your working day, with a view of what needs attention next.

Illustration: scattered notes of deadlines arrange themselves into a single timeline in date order.

Four steps.One clear list.

How it works, from company name to calendar.

Find your company

Search by company name or number. Results come from the Companies House register, with the company number and address shown so you pick the right one.

Company name or number

Northlight Stu

  • NORTHLIGHT STUDIO LTD

    Example address, London · Active

  • NORTHLIGHT STUDIOS (HOLDINGS) LTD

    Example address, Leeds · Active

  • NORTHLIGHT STUDY CENTRE LTD

    Example address, Bristol · Active

Fictional results for illustration. Real results show the company number too.

Know what is due.Understand what it means.

Each deadline is either something you file or something you pay. TaxOnTime keeps them apart so you know which action is needed.

Something you payHMRC

9m + 1d

after the accounting period ends

Corporation Tax payment

For most limited companies, Corporation Tax is paid 9 months and 1 day after the end of the accounting period. Filing the CT600 return is a separate obligation with its own deadline, explained in our guide.

Read the Corporation Tax guide

These are general descriptions. First accounts, changed accounting periods, large companies and other arrangements can follow different dates, so check anything unusual with GOV.UK or your accountant.

A clearer view of whatneeds your attention.

Save companies to your free account and see their deadlines together, with days remaining, a clear status and a calendar view. Try the example below.

Good morning

1 October 2026

Overview

What needs your attention.

Example deadlines for Northlight Studio Ltd.

Companies
3Example accounts
Due soon
1Overdue or within 7 days
Coming up
1Due in 8 to 21 days
On track
3More than 21 days away

Next deadlines

  • Due soon
    FileCompanies House

    5days

    Due 6 October 2026

  • Coming up
    PayHMRC

    21days

    Due 22 October 2026

  • On track
    File & payHMRC

    67days

    Due 7 December 2026

Next 12 months

All upcoming

Select a deadline

Choose any deadline to see its date, status and what it’s based on.

Put important dateswhere youalready look.

Send your deadlines to the calendar you already use. Each option is a one-off export: if your details change, generate and export again.

  • Google Calendar

    Opens a pre-filled event in Google Calendar for each deadline, one at a time, ready for you to save.

  • Outlook

    Opens a pre-filled event in Outlook for each deadline, one at a time.

  • .ics download

    One file with every deadline. Import it into Apple Calendar, Outlook, Google Calendar or any app that reads .ics.

  • PDF tax calendar

    A printable list of your deadlines to keep on file or share with your team.

Want a nudge in advance? Choose how many days before each deadline, and those reminders are added as extra events in your export.

Exports don’t update automatically, so they aren’t a live subscription.

Example preview
22OCT
PayHMRC

PAYE payment

Add to calendar

Clear dates for you.A clearer picturefor your clients.

Every client’s next date, in one place.

  • Add each client company to your dashboard and switch between them.
  • See deadlines across companies in a list or on a calendar.
  • Mark deadlines as done as you work through them.
Create a free account

Your companies

Example preview
  • N

    Northlight Studio Ltd

    Next: Confirmation statement · 06 OCT

    Due soon
  • F

    Fernway Builders Ltd

    Next: CIS monthly return · 19 OCT

    Coming up
  • A

    Ashby & Rowe Ltd

    Next: Corporation Tax payment · 01 OCT

    Due soon

The dates matter. So does knowing what to do.

All guides and tools

Plain-English guides to UK tax and filing deadlines, plus a penalty estimator.

Free toolPenalty estimatorEstimate penalties for late accounts, Corporation Tax, VAT and Self Assessment.

Clear information.Sensible checks.

  1. 01

    Where company details come from

    Company names, numbers, accounts dates and confirmation statement dates come from the public Companies House register.

  2. 02

    What you confirm

    VAT, PAYE, CIS and Self Assessment aren’t on the public register, so you tell us which apply and how often.

  3. 03

    How dates are worked out

    Dates are calculated from the information supplied. If a detail is wrong or out of date, the dates will be too.

  4. 04

    When to double-check

    Notices from HMRC or Companies House, first accounts, changed year ends and other unusual cases can mean different dates. Your notices take priority.

Questions,answered.

Make room foreverything else.

Start with your company. Get a clearer view of what comes next.

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