6 Month Calculator UK | Date Calculator - What Date is 6 Months From Now 2025

How is 6 Months Calculated in the UK?

When calculating "6 months from now" in UK legal and business contexts, calendar months are typically used rather than a fixed number of days.

Calendar Months vs Days

6 calendar months means moving the same date forward by 6 months:

• 15th January + 6 months = 15th July
• 31st August + 6 months = 28th/29th February (adjusted for shorter month)
• 30th November + 6 months = 30th May

How Many Days in 6 Months?

UK Legal Interpretation

In UK law, "6 months" typically means 6 calendar months from the relevant date. Key points:

• Employment: Notice periods are calculated in calendar months from the date notice is given
• Tenancies: Break clauses and notice periods use calendar months
• HMRC: Tax deadlines use specific calendar dates, not "months from" calculations
• Courts: Legal time limits may specify "calendar months" or "clear days" - always check

Month Lengths Reference

Important UK Deadlines Within 6 Months

Many of the most critical deadlines in UK life fall within a six-month window. Whether you are managing tax obligations, dealing with legal matters, or simply keeping on top of administrative tasks, understanding these time-sensitive deadlines can help you avoid penalties, missed opportunities, and unnecessary stress. Below is a comprehensive guide to the most common UK deadlines that operate on roughly a six-month timeframe.

Tax and Financial Deadlines

The UK tax calendar is built around the tax year running from 6th April to 5th April. Several important HMRC deadlines fall within six months of key dates. If you are self-employed or have untaxed income, you must register for Self Assessment by 5th October following the end of the tax year in which you first need to file. The deadline for filing a paper Self Assessment return is 31st October, while online returns must be submitted by 31st January. Any tax owed for the previous year must also be paid by 31st January, along with the first payment on account for the current year.

For those making a Capital Gains Tax report on UK residential property disposals, the deadline is 60 days from the completion of the sale. Corporation Tax returns must be filed within 12 months of the accounting period end, but the tax itself must be paid within 9 months and 1 day. VAT-registered businesses must file their VAT returns and make payment within one month and seven days of the end of each VAT quarter. Missing any of these deadlines can result in automatic penalties and interest charges from HMRC.

Legal, Probate, and Insurance Deadlines

When someone passes away in the UK, the executor or administrator of the estate faces several time-sensitive obligations. The death must be registered within 5 days in England and Wales (8 days in Scotland). An application for a Grant of Probate should ideally be made within a few months of death, and Inheritance Tax must be paid within 6 months of the end of the month in which the person died -- after which HMRC charges interest on outstanding amounts. The full Inheritance Tax account (form IHT400) must also be submitted within this period.

Insurance claims typically carry strict notification deadlines. Most home and motor insurance policies require you to report a claim "as soon as reasonably possible," but many policies specify a maximum notification period of between 30 days and 6 months. Travel insurance claims usually need to be submitted within 31 days of returning to the UK. Personal injury claims under the Limitation Act 1980 must generally be brought within 3 years of the date of injury, but for employment-related claims, the window is much shorter: unfair dismissal claims must be filed with an employment tribunal within 3 months less 1 day of dismissal, though ACAS early conciliation can extend this slightly.

Passport, Driving, and MOT Renewals

Passport renewal is one of the most common reasons people search for "6 months from now." Many countries require your passport to have at least 6 months of validity remaining from your date of arrival, which means you may need to renew well before the actual expiry date. HM Passport Office advises applying for a renewal at least 10 weeks before you need to travel, though the standard processing time is approximately 6 weeks. First-time adult applicants should allow even longer, as the process includes an interview and identity verification.

MOT certificates are valid for 12 months, and you can get your MOT test completed up to one calendar month before the current certificate expires without losing the original renewal date. Many garages and the DVSA MOT reminder service will send notifications approximately 6 weeks before expiry. Driving licences issued to UK residents are valid for 10 years (or 3 years for those aged 70 and over), and the DVLA recommends renewing before the expiry date to avoid driving without a valid licence. Provisional driving licence holders must pass both the theory and practical tests within 2 years of passing the theory test, as theory test certificates expire after this period.