---
title: "Simple Assessment (PA302) UK: A Taxpayer’s Guide for 2026"
description: "Receiving an unexpected letter from HMRC can be unsettling. If a brown envelope lands on your doormat containing a form titled \"PA302\" or \"Simple Assessment,\" your first reaction might be concern. However, this is a standard HMRC process designed to…"
url: "https://www.accountingfirms.co.uk/knowledge-bank/simple-assessment-pa302-uk-a-taxpayers-guide/"
updated: "2026-08-11"
category: Getting Started
---

# Simple Assessment (PA302) UK: A Taxpayer’s Guide for 2026

Receiving an unexpected letter from HMRC can be unsettling. If a brown envelope lands on your doormat containing a form titled "PA302" or "Simple Assessment," your first reaction might be concern. However, this is a standard HMRC process designed to make paying the correct tax simpler for certain people.

A Simple Assessment is not a penalty. It is HMRC's way of [calculating tax](https://www.accountingfirms.co.uk/blog/balanced-workload-during-tax-season/) you owe without requiring you to complete a full Self Assessment tax return.

This guide explains what a Simple Assessment is, why you might have received one, and the essential steps you need to take next.

## **What is a Simple Assessment (PA302)?**

A Simple Assessment is an official [tax calculation](https://www.accountingfirms.co.uk/blog/capital-allowances-whats-new/) made by HMRC. It is a tax bill for income that has not been taxed automatically through your job or pension (via PAYE).

Instead of asking you to fill out a [tax return](https://www.accountingfirms.co.uk/blog/government-gateway-id/), HMRC uses information it already holds from your employers, pension providers, banks, and the Department for Work and Pensions (DWP) to work out if you have underpaid tax. If you have, they send you a PA302 letter detailing the calculation and the amount due.

The core difference between this and Self Assessment is who does the work. Under Self Assessment, it is your responsibility to [complete a tax return](https://www.accountingfirms.co.uk/blog/in-with-the-new-basis-period-rules/) and calculate your own tax liability. With Simple Assessment, HMRC does the calculation for you.

### **Who Receives a Simple Assessment?**

HMRC typically uses Simple Assessment in specific situations where your tax affairs are relatively straightforward, but you still owe tax that could not be collected through your [tax code](https://www.accountingfirms.co.uk/blog/time-to-p45-the-p45/).

You are most likely to receive a PA302 if:

- You owe tax on your **State Pension**. Your State Pension is taxable, but there is no automatic way to deduct tax from it.
- You **underpaid tax** from a previous year and HMRC could not collect it through your tax code in the following year.
- You owe HMRC **£3,000 or more** from underpaid tax.
- You have other untaxed income that pushes you into a higher tax band.

Essentially, it is a tool used for people who do not meet the criteria for filing an annual Self Assessment tax return but still have a [tax liability](https://www.accountingfirms.co.uk/blog/balanced-workload-during-tax-season/) to settle.

## **Simple Assessment vs. Self Assessment: The Key Difference**

Understanding the distinction is vital. Although the names sound similar, the processes are opposites.

| Feature | Simple Assessment (PA302) | Self Assessment (Tax Return) |
| --- | --- | --- |
| **Who calculates the tax?** | **HMRC** calculates the tax owed and sends you a bill. | **You** (or your agent) calculate your tax liability by completing a tax return. |
| **Your main action?** | Check the calculation provided by HMRC and pay the bill (or query it). | Gather records of all income and expenses, complete the relevant forms, and submit them by the deadline. |
| **Is a tax return required?** | No. The PA302 replaces the need for a tax return for the income it covers. | Yes. A tax return (such as an SA100) and any relevant supplementary pages must be filed. |
| **Legal Basis** | An assessment of tax due, raised by HMRC. | A self-assessment of tax due, included by the taxpayer within their return. |

If you receive a Simple Assessment, it is crucial to remember that you still have a legal duty to tell HMRC about any income or capital gains that are *not* included in their calculation.

## **What to Do When You Receive a PA302 Letter: A 4-Step Guide**

Receiving a PA302 requires you to take action. Follow these simple steps.

### **Step 1: Don't Ignore It**

The letter contains important financial information and deadlines. Open it and read it carefully.

### **Step 2: Check the Figures**

HMRC's calculation is only as good as the information it holds. You must verify that the income figures they have used are correct. Check the amounts on the PA302 against your own records, such as:

- Your P60 form from your employer.
- P45 forms if you changed jobs.
- Letters from the DWP detailing your State Pension entitlement.
- Bank statements showing any savings interest.

### **Step 3: If You Agree, Pay the Bill**

If the information is correct, the PA302 is a valid tax bill. The letter will explain how and when to pay. The deadline is usually the 31st of January following the tax year of the assessment.

### **Step 4: If You Disagree, Contact HMRC**

If you believe the calculation is wrong, you must act quickly. You have **60 days** from the date on the letter to contact HMRC and tell them why you think it is incorrect. You can do this by phone or by writing to them. Be ready to explain which figures you dispute and provide the correct amounts.

## **Frequently Asked Questions (FAQs)**

### **Q: Is a PA302 a penalty?**

A: No. A Simple Assessment is simply a bill for tax that you owe. It is not a penalty for doing anything wrong.

### **Q: Do I need to register for Self Assessment if I get a PA302?**

A: No. The Simple Assessment system is designed specifically so that you do not have to register for Self Assessment. However, if you have other sources of income not included on the PA320, you may need to register separately.

### **Q: What happens if I cannot afford to pay the tax bill?**

A: If you are worried about paying the amount owed, you should contact HMRC as soon as possible. They may be able to agree on a 'Time to Pay' arrangement, allowing you to pay in instalments.

### **Q: Why have I received a PA302 when I am employed and pay tax via PAYE?**

A: This commonly happens if your tax code was incorrect for a previous year, leading to an underpayment. It can also happen if you started receiving the State Pension alongside your [employment income](https://www.accountingfirms.co.uk/blog/interesting-dividends/), as the pension is not taxed before you receive it.

 

*This article is for general informational purposes and does not constitute financial advice. Tax rules are complex, and your personal circumstances are unique.*

***For detailed official guidance, always refer to the GOV.UK pages on Simple Assessment. If you are unsure about your tax position or how to proceed, use AccountingFirms.co.uk to find a qualified accountant who can provide professional advice.***

##

## References

1. [Self Assessment Manual - SAM121001 - Returns: individuals returns: introduction at 1](https://www.gov.uk/hmrc-internal-manuals/self-assessment-manual/sam121001#:~:text=at%20EDM%20scanning%20unit%20in,paper%20copy%20of%20a%20computer&text=at%20EDM%20scanning%20unit%20in,however%20submit%20a&text=Wolverhampton%E2%80%99%20(SAM127000%20onwards),paper%20copy%20of%20a%20computer&text=Wolverhampton%E2%80%99%20(SAM127000%20onwards),however%20submit%20a)
2. [Enquiry Manual - EM0050 - Introduction: Self Assessment Tax System: Outline at 1](https://www.gov.uk/hmrc-internal-manuals/enquiry-manual/em0050#:~:text=Enquiry%20Manual%20EM0050%20%2D%20Introduction,the%20year%20of%20assessment%20A&text=Enquiry%20Manual%20EM0050%20%2D%20Introduction,31%20July%20after&text=Self%20Assessment%20Tax,the%20year%20of%20assessment%20A&text=Self%20Assessment%20Tax,31%20July%20after)