Avoid penalty payments and extra interest charges - check the key dates and deadlines for your 2010 tax return. You can also check important dates for corporation tax payments here.

SELF-ASSESSMENT TAX RETURN DATES

• Second interim payment of income tax due for 2009-10, where required.
• Second 5% surcharge on unpaid 2008-09 tax.

• Deadline for submission of 2009-10 paper tax returns.

• Deadline for submission of 2009-10 tax returns where submitted on-line.
• Taxpayer sends balancing payment required of 2009-10 liability to income tax
• and capital gains tax.
• First interim payment of income tax due for 2010-11, where required.

• 5% surcharge on unpaid 2009-10 tax.

• Second interim payment of income tax due for 2010-11, where required.
• Second 5% surcharge on unpaid 2009-10 tax.

• Deadline for submission of 2010-11 paper tax returns.

• Deadline for submission of 2010-11 tax returns where submitted on-line.

CORPORATION TAX PAYMENTS

• Small companies: tax due 9 months and 1 day after end of accounting period.
• Large companies: tax due in quarterly instalments from 6 months and 13 days after start of accounting period.