Learn
UK business, in plain English.
The terms every UK SME owner runs into — VAT, MTD, RTI, CIS, IR35, auto-enrolment, Companies House. What they mean, why they matter, and how YionStack handles them.
Glossary at a glance
16 entries- Accounting
- 6 entries
- Payroll
- 4 entries
- Compliance
- 3 entries
- HR
- 3 entries
Educational. UK statutory and operational terms only. No marketing filler.
Accounting
Making Tax Digital (MTD)
HMRC programme requiring digital records and digital VAT submission for VAT-registered businesses.
Read the entryUK VAT return
Quarterly nine-box submission to HMRC showing what you owe or are owed.
Read the entryCorporation tax
The tax limited companies pay on their taxable profits — the CT600 return.
Read the entryUK business rates
Local tax on most non-domestic property — rateable value × multiplier, plus the reliefs (SBRR, retail, rural) you have to claim.
Read the entryUK late payments
The Late Payment Act gives suppliers statutory interest (base + 8%) and fixed compensation — automatically, no contract clause needed.
Read the entryUK R&D tax credits
The merged R&D Expenditure Credit scheme that replaced SME/RDEC — who qualifies, what counts, what YionStack tracks.
Read the entry
Payroll
RTI (Real-Time Information) payroll
HMRC scheme requiring employers to report pay and deductions on or before each payday.
Read the entryWorkplace pension auto-enrolment
The legal duty to enrol eligible jobholders into a qualifying workplace pension.
Read the entryP11D
Annual report to HMRC of benefits in kind given to directors and employees.
Read the entryEmployer National Insurance (NIC)
NIC on top of wages, the secondary threshold, Class 1A on benefits, and the Employment Allowance — the cost that hit 73% of UK SMEs in the last Budget.
Read the entry
Compliance
Companies House confirmation statement
The annual snapshot of company data (PSC, officers, SIC codes) every UK company must file.
Read the entryConstruction Industry Scheme (CIS)
HMRC scheme for contractor-subcontractor payments in construction — deductions taken at source.
Read the entryData Subject Access Request (DSAR)
A person’s right under UK GDPR to ask a business for a copy of the personal data it holds about them.
Read the entry
HR
IR35 (off-payroll working rules)
Rules deciding whether a contractor working through their own company is effectively an employee for tax.
Read the entryDBS check
Disclosure and Barring Service check used by UK employers to screen staff for the role they will do.
Read the entryRight-to-work check
The mandatory check every UK employer must do to confirm a new employee can legally work in the UK.
Read the entry
The UK Business OS.
One operating system that knows how UK business actually works — VAT, RTI, Companies House, CIS — and the AI that watches them all.