Mandair & Co was established in 1999, we have grown since then with a team of 15 dedicated experts at our practice. We have experience in a vast range of accounting services from Taxation and finance to business start-up advice.
Our accountants have worked with many different clients’ large and small, from sole traders and social clubs to partnerships and limited companies. Whether your business is a Limited Company, partnership or you are working on your own, we can still provide the support and excellence you need for all your business, accountancy and taxation needs. We serve clients throughout the whole of the South of England.
We have three offices in the south, these are in Southampton, Portsmouth and Winchester. Contact us today to learn more about how our Accountants in Southampton, Accountants Portsmouth, and Accountant Winchester can help you manage your finances and reach your business goals.

Our accounting services are designed to simplify financial management, ensure compliance, and drive growth for small businesses.
Chartered Accountants with Over 25 Years of Proven Experience
Bespoke Accounting Solutions Aligned with Business Goals
Local Insight into Portsmouth’s Business Environment
Clear, Straightforward, and Dependable Advice
Precise bookkeeping solutions ensuring accurate, reliable, and organised financial records.
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Expert tax return preparation with strategic advice for individuals, businesses.
tax return
Professional accounting services meeting compliance standards with clarity and accuracy.
accountant preparation
Streamlined payroll processing guaranteeing timely payments and full tax compliance.
PayrollOur tailored services support small businesses in managing money, meeting compliance, and building long-term success.
Small Business Accountants: Affordable Solutions for Growing Businesses
Tax Return Services for Small Businesses: Accurate, Timely Filing
Chartered Accountants: Trusted advice, compliance, and long-term business growth.
At Mandair & Co, we are a Southampton-based, Hampshire-proud firm of accountants providing expert financial advice and accounting services to individuals and businesses across Southampton, Portsmouth, Southsea, Winchester, and Eastleigh. Our main office is located at 102 Albert Rd, Southsea, Portsmouth, PO5 2SN, in the heart of Portsmouth, ensuring easy access to our trusted accounting services. As your dedicated accountant in Portsmouth, we’ve earned a reputation for delivering reliable and accurate financial guidance to clients in both urban centres and coastal towns. Whether you’re based in Southampton, Portsmouth, Southsea, or Winchester, our team provides personalized solutions tailored to the unique needs of the local community.
From handling tax returns and bookkeeping to managing payroll and offering business growth planning, our expertise spans a wide range of services. As a trusted accountant in Portsmouth, we understand the specific financial needs of Hampshire-based businesses and individuals, helping you achieve long-term success and financial security. At Mandair & Co, we’re not just accountants — we’re an integral part of the Southampton and Portsmouth communities, committed to delivering expert, personalized financial support. Whether you’re looking for an accountant in Portsmouth to help with tax planning, payroll services, or business accounting, we are here to ensure you receive reliable, locally focused advice for all your financial needs.
Posted on Rebecca Brown AbedTrustindex verifies that the original source of the review is Google. I live overseas and Mandair & Co helps keep me on track with my personal and business tax affairs - I definitely recommend them!Posted on Direct Windows & DoorsTrustindex verifies that the original source of the review is Google. DWD Ltd is a Company that turnovers £750K. Mandair & Co have been our Accountants for the past 5/6 years. Lauren Ford has been assigned to look after our account, with Tawny Rider looking after things that pop up. Lauren & Tawny both do an excellent job with the back up of Richard (Mandair) when required, with a wealth of Knowledge etc. I recommended Mandair to a friend who's Turnover is £80K. Mandair's cost to him was very low considering the background support he has from them. From my experiences, I would fully recommend Mandair to any 1 man band or Small to Medium Based Business to do their accounts. KR. Charles Oliver (Managing Director)Posted on Simon SidhuTrustindex verifies that the original source of the review is Google. Mandair & Co have been my accountants for the past few years and i cannot recommend them highly enough. The whole team from Richard, Tawny and Amri have been exceptional in handling my accountancy affairs. A great firm with attentive, knowledgeable staff.Posted on Gurpreet SinghTrustindex verifies that the original source of the review is Google. Reliable and best accounting advise in hampshirePosted on Sophie PercyTrustindex verifies that the original source of the review is Google. Great team to work with. Easy to contact and happy to help.Posted on Kamran RajputTrustindex verifies that the original source of the review is Google. Very happy to recommend Mandair & Co headed by Richard Mandair and his highly professional and capable team. Mandair & Co have assisted me and my wife with our Annual Self Assessment returns ( brillant property income breakdowns as well as great advice) Mandair & Co also provide excellent advice and services relating to my annual Company returns as well as payroll services. always professional and speedy to respond to queries. I have been a client of Mandair & Co for 20 years and would not dream of going elsewhere for Chartered Accountancy servicesPosted on Jonathan GrantTrustindex verifies that the original source of the review is Google. Mandair are the complete accountancy service for the SME - the team are attentive, well qualified and act with complete integrity.Posted on Lisa McLeanTrustindex verifies that the original source of the review is Google. Always brilliant as I’m always late … been with Richard and his team for years. Quite honestly the best 😃Posted on dharminder raiTrustindex verifies that the original source of the review is Google. Mandair and Co have been my accountants for a few years now. I live in London and this company was recommended by a local business. I recommend Mandair and Co to anyone who wishes to see their interests being well looked after. Professional with rapid response and careful reminders. very reasonable charges too.
I can’t recommend Mandair & Co enough! They’ve been my absolute guardian angels since becoming self employed and I love working with them. Amazing value for money, very responsive with a can-do attitude, always putting their clients first! 100% recommended.
Amri and the team have made my first 2 years of self-employment super easy and stress free! They are great at explaining things I’m not sure about, they are quick at responding to emails and always provide me with great advice on how to be more efficient with books etc. I would highly recommend to anyone, top quality service!
I have used mandair accountants for over 10 years and they have always been very friendly helpful when I have needed their help with my accounts. The team are always very attentive with my affairs which gives me great peace of mind.
Cannot recommend them enough
Richard, Tawny, Ayesha and the team, have looked after our company and personal accounts for around the last 20 years. They are now dealing with the two company closures as we are retiring, but I will continue to use their services for our personal tax. Richard is very approachable and will always help, as does Tawny. Their pricing is reasonable and although possibly not the cheapest, is well worth the cost for the services they provide. I wouldn’t hesitate to recommend Mandair & Co.
We have used Mandair & co as our accountants for over 10 years. We did try another company who promised the earth for a short while, but soon found that we were paying twice the price for no extra value and returned to Richard and his team.
Helped me with business set up. Gave me excellent advice.
There are several reasons why you should choose the team at Mandair & Co for your accounting needs. For a start, we have notable expertise in the field of accounting, as all of our staff are thoroughly trained and have plenty of experience. You can expect our skilled team to put your needs first as they work closely with you to develop a long-term working relationship. When you work with our chartered accountants, you can depend on them to deliver effective accounting solutions that leave you wholly satisfied.
Yes, our team can deliver comprehensive tax planning and preparation solutions. We understand that tax-related issues can be complex to grasp fully, which can lead to mistakes being made on your tax return. To ensure that you’re only paying the tax that you owe and no more, it’s essential to work with a team of tax planning and preparation experts, such as ours. We aim to take all clients through a swift and straightforward tax preparation process.
Yes, we cater to businesses of all sizes. No matter how much accounting work needs to be completed or the amount of money we’re dealing with, our staff can fulfil your accounting needs. We have experience dealing with small and medium-sized businesses, as well as large organisations. Our team has the skill and flexibility that are required to tailor their services to the needs of all clients. We will outline the requirements of your business, no matter its size, during your initial consultation
Yes! We can work with all types of clients, whether they are individuals looking to manage their personal accounts or business owners who need assistance with their bookkeeping. We develop the same productive working relationships with individuals as we do with business owners. It might be the case that you’re a sole trader that has no experience with accounting, or you might need help preparing your tax return for the end of the year. No matter your needs, our team can deliver the same quality services.
There is no set rate for how much a chartered accountant will charge in the UK. The cost of accounting services will depend on the complexity of the work, where it’s being completed, the experience of the accountant, and several other factors. Typically, chartered accountants will charge anything from £80 to £250 per hour. At Mandair & Co, we always give our clients the best possible deals when it comes to our accounting services. You will get a fair rate when you reach out to our thoroughly trained specialists.
When looking for a proven and reliable chartered accountant, there are several things that you must consider. For a start, you should check to see if the accountant is certified by any professional bodies, such as the ICAEW or ACCA. Next, it’s important to take into account online reviews and referrals from friends, family, or colleagues. At Mandair & Co, we employ several certified accountants, and we have also received many positive reviews over the years, making us one of the most reputable accounting firms around.
At Mandair & Co, we tailor our services to the individual needs of each client, focusing on bespoke solutions. This personalised approach sets us apart from similar accounting firms and makes us a reliable choice for local clients. What’s more, we offer business advisory solutions in addition to our traditional accounting and tax services. Helping our clients to succeed in the world of business while managing their accounts allows us to offer a complete package to those in need of our services.
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Richard qualified as a Chartered Accountant in 1996 and after gaining valuable experience in a local firm of Accountants, Mandair & Co was set up in 1999. Richard has a wealth of experience in advising clients in general practice, in all aspects of their business to include Taxation, Compliance and regulatory matters affecting their business.
Richard has grown the business from his early days practicing on his own to now working with a dedicated team of 15.
Outside of work Richard enjoys a variety of sports including football and table tennis.
Tawny joined the team in September 2014 as a Personal Assistant and Receptionist and has played a key role ever since.
Tawny is the first point of contact at Mandair & Co and has a variety of duties that include reception, administrative and assisting the accounts team and acting as a PA to Richard Mandair. Her Qualifications include Level 3 NVQ in Business Administration and she is now working towards her AAT Qualifications.
Annemarie has been with the practice since 2005, she previously worked for the Inland Revenue for over 20 years.
As a Taxations Specialist she has a vast knowledge in all aspects of Tax including Self-Assessment, Capital Gains Tax, Foreign Income, Rentals, Residency and Seafarers.
As a Taxation Specialist, she brings extensive expertise across all areas of taxation, including Self-Assessment, Capital Gains Tax, Foreign Income, Rentals, Residency, and Seafarers.
Mia joined the team in June 2019 as a trainee accounts assistant and is currently working towards her AAT Qualifications.
Much of her day to day work involves dealing with accounts preparation, vat returns and self-assessment tax returns for both sole traders and Limited companies.
Outside of Work Mia enjoys travel and sports as well as partaking in charity events.
Whether you need tax advice, payroll services, or comprehensive accounting support, Mandair & Co is here to help. Get in touch with us today!