Bookkeeping
Precise bookkeeping solutions ensuring accurate, reliable and organised financial records.
Free consultation
Accountants in Portsmouth
Our accounting services are designed to simplify financial management, ensure compliance and drive growth for small businesses.
ICAEW Chartered
Xero Gold Partner
Making Tax Digital Ready
Google Client reviews
The practice
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 Portsmouth office is located at 102 Albert Road, Southsea, 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 personalised solutions tailored to the unique needs of the local community.
Why businesses choose us
ICAEW member firm
As ICAEW-qualified professionals we deliver reliable financial advice, compliance support and strategic guidance tailored to your business goals, giving you confidence to grow and thrive.
Comprehensive accounting services
Our tailored services support small businesses in managing money, meeting compliance and building long-term success. From handling tax returns and bookkeeping to managing payroll and offering business growth planning, our expertise spans a wide range of services.
Precise bookkeeping solutions ensuring accurate, reliable and organised financial records.
Expert tax return preparation with strategic advice for individuals and businesses.
Professional accounting services meeting compliance standards with clarity and accuracy.
Streamlined payroll processing guaranteeing timely payments and full tax compliance.
For small businesses
Affordable, scalable accounting solutions for start-ups and growing businesses, helping owners manage day-to-day finances, plan cash flow, and make informed decisions that support long-term growth.
Timely and accurate preparation and submission of all business tax returns, keeping you fully compliant with HMRC while maximising allowable deductions and minimising liabilities.
As experienced and ICAEW-qualified professionals, we deliver reliable financial advice, compliance support and strategic guidance tailored to your business goals.
With MTD, businesses must keep digital records and submit returns through HMRC's online systems. We help ensure your business is fully MTD-compliant and guide you through the transition.
Your local office
As one of the best-known accountants 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, personalised financial support. Whether you're looking for help with tax planning, payroll services or business accounting, we are here to ensure you receive reliable, locally focused advice.
102 Albert Road
Southsea, Portsmouth
Hampshire, PO5 2SN
Monday – Friday
9.00am – 5.00pm
More from Mandair & Co
Why choose Mandair & Co
Although we are a small practice we take a great interest in all of our clients. Each client is allocated a client manager to assist with all your business queries, so we understand your business and its needs.
Help and guidance on an accounting package to suit your business, its needs and your budget. Our trained staff know packages ranging in specification and price, so the software you use actually works for you.
Trading since 1999, with trained staff and the reassurance that your accounting is in good hands. As a firm we are members of, and regulated by, the Institute of Chartered Accountants.
Regulated & accredited
Client reviews
Free initial consultation
Request a free consultation with our team today for more information.
Est. 1999 · Over 25 years in practice
Tell us where your business is now and we will tell you, plainly, what we would do about it — before you commit to anything.