Self Assessment (SA100)

What is Self Assessment?

Self Assessment is a system used by HMRC to collect Income Tax from individuals who don’t have it automatically deducted from their income. It requires taxpayers to report their income and capital gains, and to calculate the tax owed. While HMRC uses the information provided to check accuracy, it’s your responsibility to ensure everything is correct.

Self Assessment Deadlines:

Registration: Register by 5 October following the end of the tax year in which you need to file a return.
Paper Returns: Submit by 31 October.
Online Returns: Submit by 31 January.
Payment: Pay any tax owed by 31 January.

Why Choose Xact+ for Your Self-Assessment Tax Return?

HMRC-Compliant Filing: Expertise in SA100 (individuals), SA800 (partnerships), and Capital Gains Tax returns.
Deadline Management: Never miss the 31 January filing deadline or incur late penalties.
Full-Spectrum Support: From registering for Self-Assessment to final HMRC submissions and payments.
Specialized Knowledge: Tailored services for sole traders, freelancers, landlords, and self-employed professionals.

Our Self-Assessment Tax Return Services

Register for Self-Assessment: We handle UTR applications and HMRC portal setup.
HMRC Self-Assessment Login Issues: Troubleshoot access problems and secure your account.

HMRC Self-Assessment Payment Solutions

Pay Self-Assessment Tax Bill: Guidance on HMRC payment plans, deadlines, and methods.
Late Payment Penalty Avoidance: Negotiate disputes and reduce fines.

Benefits of Self Assessment

Control Over Finances: Stay on top of your income and tax liabilities, making financial planning easier.
Timely Payments: Avoid penalties by accurately calculating and paying your taxes on time.
Claim Deductions: Identify and claim eligible expenses and allowances to reduce your tax bill.

How it works:

Fill up the application form by clicking on ‘Order Now’.
Proceed to checkout and make your payment.
You’ll receive a questionnaire regarding your income for the year via email.
We’ll handle the completion and submission of the SA100 for you.
HMRC will notify you via email about the submissions.

What’s Included:

Registration Assistance

Tax Return Preparation

Expense and Allowance Identification

Compliance and Support

Submission mark from HMRC

Finalize Your Self Assessment Filings with Xact+ Accountants

Self Assessment Filing (SA100)

£249.99/Annually

Self Assessment Filing for Individuals

Complete SA100 Calculations
NI Declarations
Digital Submitted Copy
10-15 Days of Processing

Order Now

Frequently Asked Questions:

How can I file my Self Assessment tax return?Xact+ Accountants2025-03-07T00:06:20+01:00

How can I file my Self Assessment tax return?

You can file your tax return:

Online: Through the HMRC website.
By paper: Using the SA100 form, if you meet specific criteria.

Filing online is generally faster and provides immediate confirmation of receipt.

What are the penalties for late filing or payment?Xact+ Accountants2025-03-07T00:08:14+01:00

What are the penalties for late filing or payment?

Penalties for late filing include:

Missed filing deadline: An initial £100 penalty.
Three months late: Daily penalties of £10, up to a maximum of £900.
Six months late: An additional £300 or 5% of the tax due, whichever is higher.

Penalties for late payment include:

30 days late: 5% of the tax unpaid at that date.
Six months late: An additional 5% of the tax unpaid.
Twelve months late: A further 5% of the tax unpaid.

Interest is also charged on late payments.

What records do I need to keep for my tax return?Xact+ Accountants2025-03-07T00:04:25+01:00

What records do I need to keep for my tax return?

Maintaining accurate records is essential. You should keep:

Income records: Invoices, bank statements, and sales records.
Expense records: Receipts for business expenses, utility bills, and other allowable costs.
Other relevant documents: P60s, P45s, and details of any other income.

HMRC requires you to retain these records for at least five years after the 31 January submission deadline of the relevant tax year.

What are the deadlines for filing and paying tax?Xact+ Accountants2025-03-07T00:02:15+01:00

What are the deadlines for filing and paying tax?

Key deadlines include:

5 October: Register for Self Assessment if you’re a new filer.
31 October: Submit paper tax returns for the previous tax year.
31 January: Submit online tax returns and pay any tax owed for the previous tax year.

Missing these deadlines can result in penalties and interest charges.

Who needs to file a Self Assessment tax return?Xact+ Accountants2025-03-06T23:56:55+01:00

Who needs to file a Self Assessment tax return?

You may need to file a Self Assessment tax return if you:

Are self-employed as a sole trader and earned more than £1,000 before expenses.
Are a partner in a business partnership.
Have income from property rental.
Receive untaxed income, such as tips or commission, of £2,500 or more.
Have savings or investment income of £10,000 or more before tax.
Need to pay Capital Gains Tax on profits from selling assets.

How do I register for Self Assessment?Xact+ Accountants2025-03-06T23:59:18+01:00

How do I register for Self Assessment?

If you’re filing a Self Assessment tax return for the first time, you must register with HMRC. The registration process depends on your circumstances:

Self-employed or sole trader: Register using form CWF1.
Not self-employed: Register using form SA1.
Partner in a partnership: Register using form SA401.

After registering, HMRC will issue you a Unique Taxpayer Reference (UTR) number, which you’ll need to file your tax return.

Self Assessment Tax Returns

Stress-Free Self-Assessment Tax Return Services.