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With RIFT's self assessment tax return service, we do all the paperwork for your annual returns. There are no deadline worries, no costly mistakes or misunderstandings and no missed opportunities. Our fixed-rate prices start at just £125+VAT. Click the contact button below to get in touch with us.
Self Assessment is the system HMRC uses to collect tax that isn’t dealt with automatically through systems such as PAYE.
You report the income, expenses, gains and reliefs that apply to you. HMRC then uses that information to work out your overall tax position.
You might need a tax return because you’re self-employed, but plenty of people using Self Assessment also have a normal PAYE job.
Self-employed tax returns mean keeping business records if you're self-employed, so be sure to keep your business records handy when the time to file comes. You'll also need to consider things like payments on account each year. These involve paying 6 months' worth of tax in advance on the 31st of January and 31st of July each year. It's also worth understanding what you can claim on your expenses when you do your tax return. If you think you could be due a tax rebate, our simple tax refund calculator will tell you.
It's not just the self-employed who need to worry about self assessment tax returns. You’ll need to submit a tax return if:
Certain other people may need to send a return (eg religious ministers or Lloyd’s underwriters) – call us to check.
If you need to file a self-assessment tax return, the main deadlines you need to be aware of are:
5 October 2026: tell HMRC if you need to complete a tax return and you’re new to Self Assessment, or need to register again
31 October 2026: deadline for most paper returns
30 December 2026: deadline if you want HMRC to consider collecting a qualifying Self Assessment bill through your PAYE tax code
31 January 2027: deadline for most online returns
31 January 2027: deadline for paying the tax you owe
Don’t confuse registering with submitting. They’re separate steps with separate deadlines.
To submit your Self Assessment tax return, you’ll need to:
The specific pages of the Self-Assessment tax return you need to fill in will depend on your situation. The return has sections devoted to self-employment income and expenses, partnerships, UK property income, capital gains, and more. Not all of these sections may apply to you, so make sure you answer the questions at the start when you submit your tax return online. That way, you’ll only be shown the sections of the form that you need to fill in.
Read through the tax return carefully as you go. It’s easy to miss key details about your things like pension contributions, charitable donations, or student loan repayments. Many of these details can change the amount of tax you owe, so you need to get them right. Similarly, don’t forget to use your Self Assessment form to let HMRC know about things like:
Filing tax returns online is the fastest and safest way of keeping on the right side of HMRC. Online tax returns mean you don't have to wade through pages of questions that don't apply to you. They also mean you have later deadlines and no worries about postal delays or lost items. Your tax will be calculated automatically, and you'll get any repayments you're owed faster than with paper returns. You'll see instantly what tax you owe, and will be able to correct mistakes before they become problems.
Almost 90% of people filing Self Assessment tax returns do it online. It's not always an easy system to get to grips with or get the best from, though. That's why RIFT's tax return service takes all the worry and guesswork out of Self Assessment for you. With our help, you'll avoid all the pitfalls and never miss out on anything you're entitled to.
Here are a few things you need to know about Self Assessment tax returns:
There are a few kinds of people who can't use online self assessment, and have to file their tax returns on paper. For instance, MOD personnel with certain clearance levels need to use paper returns. RIFT can, of cource, still handle your Self Assessment in these cases.
If you've got other problems with online self assessment, we can help there too. If you've got limited access to the internet, or disabilities that make online returns a challenge, talk to us. We're always available to talk through your issues and solve your problems. We can even help over skype using British Sign Language if you're hard of hearing.
When you're setting up a small business, you've got some important decisions to make. One of the first is between being a Sole Trader or forming a Limited Company. There are pros and cons to each route. You'll be weighing up simplicity against security, and inexpensiveness against tax efficiency. Either way, though, you're going to have to be comfortable with HMRC's Self-Assessment tax system.
When you're self-employed, you really have to understand what Self Assessment means for you and your business. The system has specific deadlines and requirements to meet - and painful penalties for failing to meet them. RIFT can take care of all your Self Assessment and self-employment questions or problems. We can even file your tax returns for you, and fight your corner with HMRC if you want.
Filing a Self Assessment tax return means showing HMRC a full picture of your finances. Here are a few of the most important documents to hold onto:
Remember, it's not just the self-employed who file a Self Assessment tax return online. If you're claiming a tax rebate for expenses of over £2,500, you'll need to use the system too.
There’s basically no acceptable excuse for missing self assessment tax return deadlines, even if you don't owe HMRC anything. If you miss the deadline there are a number of self assessment tax return penalties that you could be hit with:
We’re here to take care of everything - from completing your tax return, through calculating any refunds due, to speaking to HMRC on your behalf.
Knowing your employment status is incredibly important. Self-employed people are treated very differently from employed ones by HMRC. It makes a difference to your National Insurance contributions, your Income Tax and the ways you pay both. It also has a big effect on the way you qualify for and claim your tax refunds.
The key thing to realise is that you can't just choose your employment status to suit you. The taxman is very keen on stamping out what he calls 'false self-employment'. This is where people are treated as if they were employees, but are declared as self-employed. Workers trapped like this can easily find themselves missing out on key employee perks like sick pay or maternity leave. Whether you're employed depends entirely on your circumstances, and there's a surprising amount of fuzziness in the definitions.
If you've got a contract to work for a company you don't own, there's a good chance you're employed by them. Employed people tend to work set hours, usually for one company at a time. They get regular pay either weekly or monthly, which has already been taxed. They also have paid holidays or other benefits.
Self employed people probably work for several clients or customers at the same time. They may own their own business and can choose how, where and when they work. They tend to invoice for each job they take on and pay their own taxes through Self-Assessment. In some cases, they may not even have to do the work themselves. Many self-employed people can actually assign other people to do it instead. Things can get tricky when a self-employed person gets work through an agency or other employment intermediary. Also, if you've got more than one job, it's possible you might be bother employed and self-employed at the same time. If you've got any doubts about your employment status, talk to RIFT and we'll get it sorted out.
Expenses for self-employed people are the inescapable costs of doing your work or running your business. When you're filling in your Self Assessment tax return each year, they reduce the amount of profit you end up paying tax on. The specific rules for this depend on whether you're a Sole Trader or a Limited Company, and how you do your accounting. The main point, though, is that there are certain necessary expenses that count against your taxable income. Examples of common allowable expenses include:
Sometimes, you may pay for something that has both a business and a personal use, like a phone bill. In general, you can only claim for the proportion of business use you get out of it. If you work from home, you might also be able to claim a percentage of your household bills as expenses.
There are a couple of things you can do to keep your expenses calculations simple. One is to use the "cash basis" of accounting. Traditional accounting has a few complicated rules about when costs become allowable expenses. For instance, if you buy some stock to sell on, HMRC says you've bought an "asset", and can't claim its cost as an expense. When you sell the stock, what you paid for it becomes an expense of the sale, and can be claimed for. Under the cash basis, you simply record everything you spend when you spend it. This means you can claim the stock as an expense straight away.
Another option is to use HMRC's "simplified expenses" rules. Under this system, you can claim fixed amounts as expenses for things like working from home or running a vehicle. Simplified expenses can't be used by Limited Companies, though. Only Sole Traders and partnerships (with no companies as partners) can choose them.
Yes, you'll need a UTR number when filing a Self Assessment tax return. You will also need it if you are:
If you need a UTR number or have lost one we can help. Get in touch with us.
Tax returns involving Self Assessment needn't take longer than other kinds to process. HMRC usually takes about 8-10 weeks to sort out a refund, but there are things that can slow them down. One of these is people having trouble with the Self Assessment system.
Self Assessment is often part of the tax rebate claim process, and it's not only the self-employed who have to deal with it. If you're claiming for expenses over £2,500, for instance, you'll need to file a Self Assessment return to do it. You may also have to file one if you've got income from other sources, like rent from a property you're letting out. Construction workers using the CIS system know all about Self Assessment, as it's vital in claiming back the tax taken from their pay.
The main thing to know is that RIFT takes care of Self Assessment as part of our service. We'll help get you registered for the scheme if you aren't already, and handle all the heavy lifting of getting your return filed. Keep in mind that registering for Self Assessment can take a couple of weeks. HMRC have to send you a Unique Taxpayer Reference number, so it's worth planning ahead.
RIFT has 7 specialist teams working to get your refund paid as quickly as possible. They make sure there are no hold-ups when your claim goes to HMRC, checking for mistakes and keeping the process moving. There are even a few simple things you can do to help your claim go as quickly and smoothly as possible. Getting your 64-8 form signed and returned promptly is a big step in the right direction, for instance.
If you need help getting to grips with the basic of capital gains tax, if you want to make the most of your tax situation or keep on the right side of HMRC. Check out our capital gains tax guide.
Making Tax Digital for Income Tax is now live.
If your 2024/25 Self Assessment tax return showed more than £50,000 of qualifying gross income from self-employment and property, you may have needed to start using Making Tax Digital from 6 April 2026.
That means using compatible software to:
keep digital records
send quarterly updates to HMRC
prepare and submit your tax return through compatible software
For people in the first mandatory group, the first quarterly update was due by 7 August 2026 and the second is due by 7 November 2026.
The threshold then falls to more than £30,000 from April 2027 and more than £20,000 from April 2028.
Importantly, people brought into Making Tax Digital in April 2026 still need to deal with their 2025/26 Self Assessment return in the usual way by 31 January 2027.
06th October 2026
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