Guides | BaseFiler

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Start here for the filing, penalty, and tax rules people reach for most often.

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Companies House late filing penalties

Estimate the standard Companies House late filing penalty.

Try the calculator → Companies House Late Filing Penalty Calculator

Essential

Accounts filing deadlines

Check when annual accounts are normally due.

Try the calculator → Accounts Filing Deadline Calculator

Confirmation statement deadlines

Know when the next confirmation statement is due.

Try the calculator → Confirmation Statement Deadline Calculator

Essential

Corporation Tax payment deadlines

Know when Corporation Tax payment is normally due.

Try the calculator → Corporation Tax Payment Deadline Calculator

CT600 filing deadlines

Know when a CT600 return should be filed.

Try the calculator → CT600 Filing Deadline Calculator

Most Read

Dividend vs salary

Compare salary and dividends for owner pay.

Try the calculator → Dividend vs Salary Calculator

Companies House

Guides explaining accounts, confirmation statements and filing rules.

Most Read

Companies House late filing penalties

Estimate the standard Companies House late filing penalty.

Try the calculator → Companies House Late Filing Penalty Calculator

Essential

Accounts filing deadlines

Check when annual accounts are normally due.

Try the calculator → Accounts Filing Deadline Calculator

Confirmation statement deadlines

Know when the next confirmation statement is due.

Try the calculator → Confirmation Statement Deadline Calculator

Confirmation statement late filing

See what an overdue confirmation statement means.

Try the checker → Confirmation Statement Late Filing Checker

Dormant company filing rules

See how dormant status changes filing obligations.

Try the calculator → Dormant Company Filing Deadline Calculator

Small company thresholds

Check the main size tests for small companies.

Try the checker → Small Company Threshold Checker

Micro-entity rules

Understand the main micro-entity eligibility rules.

Try the checker → Micro-Entity Eligibility Checker

Company strike-off risks

Spot the facts that increase strike-off risk.

Try the checker → Companies House Strike-Off Risk Checker

Overdue accounts consequences

See why overdue accounts become a wider problem.

Open the tool → Overdue Accounts Risk Estimator

Company dissolution process

Understand the staged process for closing a company.

Try the calculator → Company Dissolution Timeline Calculator

Corporation Tax

Guides explaining payment dates, CT600 filing, and tax calculations.

Essential

Corporation Tax payment deadlines

Know when Corporation Tax payment is normally due.

Try the calculator → Corporation Tax Payment Deadline Calculator

Corporation Tax late payment penalties

Check how late payment penalties build up.

Try the calculator → Corporation Tax Late Payment Penalty Calculator

Corporation Tax interest rules

See how interest grows on unpaid Corporation Tax.

Try the calculator → Corporation Tax Interest Calculator

CT600 filing deadlines

Know when a CT600 return should be filed.

Try the calculator → CT600 Filing Deadline Calculator

CT600 late filing penalties

See what drives CT600 late filing penalties.

Try the calculator → CT600 Late Filing Penalty Calculator

HMRC late payment interest

See how late-payment interest grows on tax debt.

Try the calculator → HMRC Late Payment Interest Calculator

Corporation Tax marginal relief

Understand who gets marginal relief and why.

Try the calculator → Marginal Relief Calculator

Corporation Tax liability basics

See the main inputs behind a tax estimate.

Open the tool → Corporation Tax Liability Estimator

Directors & Shareholders

Guides covering salary, dividends, loans, and owner-manager decisions.

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Dividend vs salary

Compare salary and dividends for owner pay.

Try the calculator → Dividend vs Salary Calculator

Dividend tax rates

See how dividend tax rates affect take-home pay.

Try the calculator → Dividend Tax Calculator

Director salary planning

Understand the main director salary thresholds.

Try the calculator → Optimal Director Salary Calculator

Director loan account tax

See the tax issues around overdrawn loan accounts.

Try the calculator → Director Loan Account Tax Calculator

Section 455 tax

Understand when Section 455 tax can apply.

Try the calculator → Director Loan Section 455 Tax Calculator

VAT

Guides covering registration thresholds and the main VAT penalty rules.

Essential

VAT registration thresholds

Know the main triggers for VAT registration.

Try the calculator → VAT Registration Threshold Calculator

VAT late filing penalties

See how the VAT late filing points system works.

Try the calculator → VAT Late Filing Penalty Calculator

VAT late payment penalties

See how VAT late payment penalties build up.

Try the calculator → VAT Late Payment Penalty Calculator

Compliance Recovery

Guides for appeals, remediation steps, and getting deadlines back under control.

Companies House penalty appeals

Know what makes a penalty appeal usable.

Try the generator → Companies House Penalty Appeal Generator

HMRC penalty appeals

See what makes an HMRC appeal coherent.

Try the generator → HMRC Penalty Appeal Generator

Updated

Company compliance calendar

Bring key company deadlines into one working view.

Try the generator → Company Compliance Calendar Generator

Filing deadline timeline

Turn filing dates into a usable timeline.

Try the generator → Filing Deadline Timeline Generator

Compliance Guides

Most Popular

Companies House late filing penalties

Accounts filing deadlines

Confirmation statement deadlines

Corporation Tax payment deadlines

CT600 filing deadlines

Dividend vs salary

Companies House

Companies House late filing penalties

Accounts filing deadlines

Confirmation statement deadlines

Confirmation statement late filing

Dormant company filing rules

Small company thresholds

Micro-entity rules

Company strike-off risks

Overdue accounts consequences

Company dissolution process

Corporation Tax

Corporation Tax payment deadlines

Corporation Tax late payment penalties

Corporation Tax interest rules

CT600 filing deadlines

CT600 late filing penalties

HMRC late payment interest

Corporation Tax marginal relief

Corporation Tax liability basics

Directors & Shareholders

Dividend vs salary

Dividend tax rates

Director salary planning

Director loan account tax

Section 455 tax

VAT

VAT registration thresholds

VAT late filing penalties

VAT late payment penalties

Compliance Recovery

Companies House penalty appeals

HMRC penalty appeals

Company compliance calendar

Filing deadline timeline

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