Business & Self-Employment Calculators & Guides
Estimate VAT, Self Assessment and cash-flow obligations for sole traders and small businesses.
Calculators
calculatorPayments on Account CalculatorPayments on Account Calculator with a transparent formula, 2026/27 effective date, worked UK example, official sources and visible review status.calculatorReverse VAT CalculatorReverse VAT Calculator with a transparent formula, 2026/27 effective date, worked UK example, official sources and visible review status.calculatorVAT Flat Rate Scheme CalculatorVAT Flat Rate Scheme Calculator with a transparent formula, 2026/27 effective date, worked UK example, official sources and visible review status.
Guides
articleAllowable Expenses for LandlordsAllowable Expenses for Landlords: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Amend a Self Assessment Tax ReturnHow to Amend a Self Assessment Tax Return: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Appeal a Self Assessment PenaltyHow to Appeal a Self Assessment Penalty: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Check a VAT NumberHow to Check a VAT Number: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Complete a Self Assessment Tax ReturnHow to Complete a Self Assessment Tax Return: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Get a UTR NumberHow to Get a UTR Number: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleMaking Tax Digital for VATMaking Tax Digital for VAT: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Pay a Self Assessment Tax BillHow to Pay a Self Assessment Tax Bill: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleHow to Pay a VAT BillHow to Pay a VAT Bill: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Allowable ExpensesSelf Assessment Allowable Expenses: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment and Pension Tax ReliefSelf Assessment and Pension Tax Relief: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Tax Return ChecklistSelf Assessment Tax Return Checklist: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for Capital GainsSelf Assessment for Capital Gains: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for Company DirectorsSelf Assessment for Company Directors: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for LandlordsSelf Assessment for Landlords: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for PartnershipsSelf Assessment for Partnerships: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for Sole TradersSelf Assessment for Sole Traders: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment for StudentsSelf Assessment for Students: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Late Filing PenaltiesSelf Assessment Late Filing Penalties: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Late Payment PenaltiesSelf Assessment Late Payment Penalties: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Payment Plan GuideSelf Assessment Payment Plan Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Registration GuideSelf Assessment Registration Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSelf Assessment Tax Calculation ExplainedSelf Assessment Tax Calculation Explained: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleWhat Is Self Assessment?What Is Self Assessment?: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleSimplified VAT InvoicesSimplified VAT Invoices: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Annual Accounting SchemeVAT Annual Accounting Scheme: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Bad Debt ReliefVAT Bad Debt Relief: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Capital Goods SchemeVAT Capital Goods Scheme: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Cash Accounting SchemeVAT Cash Accounting Scheme: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Deregistration GuideVAT Deregistration Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Domestic Reverse Charge for ConstructionVAT Domestic Reverse Charge for Construction: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Flat Rate SchemeVAT Flat Rate Scheme: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT for CharitiesVAT for Charities: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT for Sole TradersVAT for Sole Traders: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Fuel Scale ChargesVAT Fuel Scale Charges: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Group RegistrationVAT Group Registration: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Invoice RequirementsVAT Invoice Requirements: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Late Filing PenaltiesVAT Late Filing Penalties: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Late Payment PenaltiesVAT Late Payment Penalties: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Margin SchemeVAT Margin Scheme: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Number Format ExplainedVAT Number Format Explained: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT on Commercial PropertyVAT on Commercial Property: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT on Digital ServicesVAT on Digital Services: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Partial ExemptionVAT Partial Exemption: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Payment Plan GuideVAT Payment Plan Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Place of Supply RulesVAT Place of Supply Rules: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Rates in the UKVAT Rates in the UK: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Registration GuideVAT Registration Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Registration ThresholdVAT Registration Threshold: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Retail SchemesVAT Retail Schemes: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Return GuideVAT Return Guide: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Reverse Charge ExplainedVAT Reverse Charge Explained: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVAT Transfer of a Going ConcernVAT Transfer of a Going Concern: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleWhat Is VAT?What Is VAT?: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.articleVoluntary VAT RegistrationVoluntary VAT Registration: a detailed UK guide with a direct answer, worked numerical example, official source citations, limitations, review metadata and practical next steps.