UK tax, payroll and HMRC rules — 2026/27 checks

Age Gate Lint — UK Online Safety Act

VS Code extension

Names every line of your age gate that Ofcom does not count as highly effective age assurance

FedRAMP OSCAL SSP Lint

VS Code extension

16 checks on a system-security-plan JSON, in your editor, before a validator returns the package

Recruiting Workflow Template for n8n: UK, US and Germany Candidate Retention Dates

UK rejection window now 6 months (from 2026-10-01). 6 n8n workflows run your pipeline in your own Google Sheet and stamp a delete-by date on every rejected candidate:…

Tour Operator Margin Calculation 2026 (UK TOMS year-end)

Spreadsheet calculator

For UK accountants of tour operators: the VAT Notice 709/5 section 9 year-end TOMS calculation, which splits the margin by cost and takes 1/6 of the UK share, not 20%.

IR35 Deemed Payment Calculator 2026/27 (Small Clients)

Spreadsheet calculator

When a small private-sector client leaves the IR35 call to you, your company works out the Chapter 8 deemed employment payment itself and reports it on an FPS on or…

VAT Record Keeping Penalty Calculator 2026 (MTD, UK)

Spreadsheet calculator

No MTD digital records costs £5, £10 or £15 a day for up to 100 days under VATA 1994 s.69, every set of records not kept for 6 years costs £500, and a careless VAT error…

Capital Gains Tax Calculator UK 2025/26 — Shares & Crypto, Pay by 31 January 2027

Spreadsheet calculator

For UK investors who sold shares or crypto between 6 April 2025 and 5 April 2026: 18% or 24% on gains above the £3,000 allowance, due 31 January 2027, and HMRC adds 5%…

Companies House Late Filing Penalty Calculator 2026 (accounts + CT600)

Spreadsheet calculator

Late accounts cost a private company £150 to £1,500, doubled if last year was late too.

Construction Budget Spreadsheet UK 2026: CIS Deduction, Retention and Reverse Charge VAT

Spreadsheet calculator

CIS takes 20% of the labour part of every payment (30% if you are not CIS-registered), and since 1 March 2021 the domestic reverse charge sends the 20% VAT on your…

Secret Santa Generator for UK Offices — HMRC £50 Gift & £150 Party Check 2026

Spreadsheet calculator

Draw names free, then check the bit HMRC cares about: a company-paid gift over £50 is taxable in full (ITEPA s323A), and if the Christmas party plus your other annual…

Bassline MIDI Pack: UK Garage, UK Drill, Amapiano, Reggaeton, Afro House, Baile Funk in all 12 keys

216 .mid files: 18 basslines x 12 minor keys, each at its style's working tempo

Ecommerce UI Kit — Price Display by Country: VAT-Inclusive, UK Drip Pricing, California SB 478, Japan (Figma + Sketch)

Figma kit

Ecommerce UI kit for stores selling into several countries: a £40.00 item with a £5.00 service fee must read £54.00 incl.

Arduino Sensor Code for Food-Safety Temperature Alarms (FDA 41°F / UK 8°C)

The same 46°F walk-in fails the FDA 41°F limit and passes England's 8°C. 6 compiled Uno sketches that latch the alarm until someone resets it.

Defamation Notice of Complaint Form – UK Section 5 Defence for Forums, Review and Comment Sites

WordPress plugin

A UK site that hosts what its users post keeps the Defamation Act 2013 section 5 defence only if it acts within 48 business hours of a valid notice of complaint.

Arduino Code Temperature Sensor: Food-Safety Fridge, Hot-Hold and Cooling Alarms (FDA 41°F/135°F · UK 8°C/63°C)

6 compile-tested Arduino Uno sketches, no libraries: a latched alarm when a fridge passes 41°F (FDA Food Code) or 8°C (UK), and a cooling clock that fails a batch not at…

Obsidian Kanban Template: GDPR Breach Board, 72-Hour Clock (UK & EU)

Obsidian vault

Aware Fri 2 Oct 2026 at 18:30 -> notice due Mon 5 Oct 2026 at 18:30, weekend counted. Miss GDPR Art. 33 and Art. 83(4) allows fines up to €10,000,000 or 2% of turnover.

Expensive Car Supplement Cliff Check 2026-27

Browser extension · Chrome, Edge, Firefox

From 1 April 2026 there are two VED lines: £50,000 for zero-emission cars and £40,000 for petrol, diesel and hybrid.

UK Alcohol Duty per SKU (2026 Rates)

Browser extension · Chrome, Edge, Firefox

Duty per can, bottle or keg at the rates that took effect 1 February 2026, with draught relief and the 20-litre container test.

Pension IHT 2027 Check - UK death-benefit tax on an unused pot

Browser extension · Chrome, Edge, Firefox

Apportioned inheritance tax, the beneficiary's income tax on top and the two HMRC dates, for deaths from 2027-04-06

Umbrella PAYE Liability Check 2026

Browser extension · Chrome, Edge, Firefox

The PAYE and NIC an umbrella chain can push onto your agency, worked out in the browser

UK Right to Work Exposure - 1 October 2026 Scope Change

Browser extension · Chrome, Edge, Firefox

What the new agency, subcontractor and platform duty costs you per unchecked engagement

UK Cash-Flow Insolvency Test 2026 - s.123 limbs and s.214 exposure

Browser extension · Chrome, Edge, Firefox

Type your own 13-week cash figures; it says which limb of Insolvency Act 1986 s.123 is tripped today and what another eight weeks of trading adds to the deficiency.

Skilled Worker Sponsor Cost Gate 2026/27

Browser extension · Chrome, Edge, Firefox

Price the whole Home Office bill and test the offered salary against the £41,700 floor before you assign the certificate.

UK SSP 2026: what day-one sick pay costs you

Browser extension · Chrome, Edge, Firefox

Prices one absence and a year of absences under the 6 April 2026 statutory sick pay rules, and shows the gap against the old three-waiting-day rule.

TOGC & Option to Tax Cost Check (UK commercial property, 2026)

Browser extension · Chrome, Edge, Firefox

Prices what a missed VAT1614A notification costs when the TOGC fails: 20% VAT, the SDLT charged on that VAT, and the months you fund it.

Plastic Packaging Tax 2026-27 Check (UK)

Browser extension · Chrome, Edge, Firefox

Type your tonnage. Get the 10-tonne threshold answer, the bill at the 2026-27 rate of £228.82 a tonne, the late-filing penalty and the exact HMRC due date.

VAT Relief Declaration Gap - UK Notice 701/7 exposure

Browser extension · Chrome, Edge, Firefox

Prices the zero-rated disabled-relief sales you cannot prove, before an HMRC officer does

UK VAT Partial Exemption Calculator 2026

Browser extension · Chrome, Edge, Firefox

Standard method, all three de minimis tests and the annual adjustment date for one VAT period

CGS Threshold Check — the £600,000 rule that started 29 July 2026

Browser extension · Chrome, Edge, Firefox

Type the spend and the date the item was bought or built. It tells you whether the VAT Capital Goods Scheme still owns that asset for ten years, and what this interval's…

Company Car BIK & Class 1A Checker 2026-27 (UK)

Browser extension · Chrome, Edge, Firefox

Type the P11D price, CO₂ and electric range. Get the 2026-27 appropriate percentage, the driver's income tax and the employer's Class 1A at 15% — before the P11D(b) goes…

Companies House ID Verification Deadline Checker (UK, 2026)

Browser extension · Chrome, Edge, Firefox

Your director's real deadline is the company's confirmation statement date, not 18 November 2026.

Redundancy Exit Cost Calculator (UK 2026/27)

Browser extension · Chrome, Edge, Firefox

The employer's real cost of one redundancy on or after 6 April 2026 - statutory pay at the new £751 cap, PILON, the £30,000 exemption and 15% employer NIC.

IR35 Deemed Employer Cost Check 2026/27

Browser extension · Chrome, Edge, Firefox

What an inside-IR35 contractor really costs the fee-payer once employer NI, the Apprenticeship Levy and the April 2024 set-off gap are priced.

MTD for Income Tax 2026: are you in, and on which dates

Browser extension · Chrome, Edge, Firefox

Gross income test, your start date, your four filing dates, and what one late payment costs.

HMRC Fraud Prevention Header Lint for Making Tax Digital (VAT and Income Tax)

VS Code extension

Finds the Gov-Client and Gov-Vendor header mistakes HMRC rejects, in your editor, offline, before you send the request.

UK Pension Annual Allowance & Unclaimed Relief Checker - 2026/27

Browser extension · Chrome, Edge, Firefox

Your tapered allowance, three years of carry-forward, and the higher-rate relief your provider never added - on the 2026/27 figures, in your browser.

UK employer NI and the true cost of a hire - 2026/27

Browser extension · Chrome, Edge, Firefox

Type the salary you are about to offer and see what it actually costs you a year, a month and an hour on the rates in force from 6 April 2026: 15% employer NI above a…

Late Payment Interest Claim - UK, EU and Germany, 2026 rates

Browser extension · Chrome, Edge, Firefox

Work out what you may legally add to an overdue B2B invoice: statutory interest at the locked half-year rate, plus the automatic fixed compensation almost every invoice…