IR35 and off-payroll reviews
We assess each contract and how you actually work, so you know whether you are inside or outside IR35 and what it means for your take-home.
IR35, dividends and year-end accounts handled by a contractor accountant who knows how your day rate really works.
You win the contracts, we handle the rest. As a specialist contractor accountant for limited company contractors, we take IR35, payroll, VAT and your year-end accounts off your plate. Inside IR35, outside it, or weighing up an umbrella? We know the difference, structure your salary and dividends sensibly, and keep HMRC off your back. Book a call with a limited company contractor accountant who actually understands the day-rate world, on one fixed monthly fee.

Most accountants are great with shops and trades, but contracting is its own world. Your income arrives as a day rate through a limited company, and the tax planning that follows looks nothing like a normal small business.
Get IR35 wrong, draw dividends the lazy way, or miss a legitimate expense, and you quietly hand HMRC money you never needed to. You rarely find out until it is too late to fix.
A specialist contractor accountant works the other way round. We know the day-rate model, the off-payroll rules and the salary-and-dividend split, so we plan ahead instead of just filing last year. We do not only record your numbers. We improve them.
We assess each contract and how you actually work, so you know whether you are inside or outside IR35 and what it means for your take-home.
Full year-end accounts, Corporation Tax and the Confirmation Statement for your personal service company, filed on time.
We set a sensible director salary and handle the dividend paperwork, so you draw your profits the efficient way and stay compliant.
Registration, quarterly returns and a check on whether the Flat Rate Scheme or standard VAT leaves you better off.
Home office, equipment, travel between sites, training and more, all claimed correctly against your company.
Moving from an umbrella or another accountant? We handle the handover and your records so nothing drops between contracts.
IR35, the off-payroll working rules, exists to stop people working like an employee while being paid like a company. It is the single biggest factor in what you actually take home.
Outside IR35, you run a genuine business: you can pay yourself a small salary and take the rest as dividends, and you control your expenses. Inside IR35, most of your contract income is taxed close to employment, so the limited company advantage largely disappears.
Whether you are inside or outside is not your choice alone. It depends on your real working practices, such as your right to send a substitute, who controls the work, and whether you carry business risk. For many private-sector contracts the end client now decides your status; for others you assess it yourself.
We review each contract and how you actually work before you sign, so there are no nasty surprises. Where a status is borderline, we tell you plainly rather than letting you assume the answer you would like.
An umbrella company employs you and runs everything through PAYE. It is simple and it is usually the sensible route for short or inside-IR35 contracts, but you are taxed as an employee and you carry the cost of the umbrella fee.
Your own limited company gives you control and, on outside-IR35 work, a more efficient way to draw your income. The trade-off is more admin: year-end accounts, Corporation Tax, a Confirmation Statement and director payroll all sit on you.
The right answer depends on your contracts, your day rate and how long you plan to keep contracting. We model both for your situation and tell you which one genuinely leaves you better off, rather than defaulting to whatever is easiest to sell.
Through your own company you do not just take a wage. Your company pays Corporation Tax on its profits, then you draw money as a mix of salary and dividends.
A modest director salary keeps your National Insurance record ticking over and is usually a deductible cost for the company. The rest comes out as dividends, which are taxed differently from salary and only after Corporation Tax has been paid.
Get the split right and you keep more of your day rate, legitimately. Get it wrong, and you either overpay tax or draw dividends the company cannot actually support, which causes problems later.
We set your salary level, run your director payroll and prepare the dividend paperwork properly, so every withdrawal is recorded the way HMRC expects.
More than you might think, but only what is genuinely for the business. The rules tighten when you work inside IR35, so claiming correctly matters.
Travel rules in particular depend on your IR35 status and how long you have been at one site, so we check each claim rather than waving it through. We also keep your VAT treatment right on what you buy.
Contracting runs on a rhythm of deadlines: VAT every quarter, payroll every month, a Confirmation Statement once a year, then your accounts and Corporation Tax after your year-end. Miss one and the penalties stack up fast.
We set up your bookkeeping so invoices, expenses and receipts flow in as you go, not in a panic before each deadline. That keeps your VAT returns accurate and your numbers live.
If you also have income outside your company, we handle your personal Self Assessment too, including the dividends you have drawn, so the whole picture ties up.
You do not have to wait for your year-end to switch. Changing contractor accountant mid-contract is routine, and a good one makes it painless.
We contact your current accountant for the professional clearance and records, pick up your bookkeeping where it stands, and make sure no VAT return, payroll run or filing deadline slips during the handover.
You keep contracting as normal. We sort the paperwork in the background and confirm once everything has moved across cleanly.
Most limited company contractors pay between £99 and £199 a month, covering your accounts, payroll, VAT and the IR35 support that matters most.
No hourly rates. No surprise bills. One fixed fee, a named, qualified accountant who knows contracting, and a 30-day money-back guarantee.
Startups and small companies that need essential compliance and year-end support without VAT or payroll.
Growing businesses that need complete accounting services, VAT return management, and payroll handling.
Established businesses that want strategic mentoring, business planning, and a part-time finance director driving growth.
It turns on whether you'd be an employee if you worked for the client directly, judged on control, personal service (can you send a substitute?), and mutuality of obligation. For medium and large clients the client decides and must give you a Status Determination Statement; for small clients and many overseas engagements the responsibility stays with you and your company. We review the written contract and how you actually work, because HMRC looks at both.
Often not, since 2017. If your VAT-inclusive spend on goods is under 2% of turnover, or under £1,000 a year, you're a limited cost trader and must use the 16.5% rate, which leaves almost no FRS gain. Most consultants and IT contractors are labour-only and fall into this. We run the comparison on your real figures rather than assuming the old sector percentage still helps.
Typically a modest director's salary that still counts toward your state pension, topped up with dividends. Dividends above the £500 allowance are taxed at 10.75% in the basic band, 35.75% in the higher band and 39.35% above that, and they must come from genuine retained profit after Corporation Tax. We model your specific income each year so you don't overpay or vote an illegal dividend.
When your VAT-taxable turnover exceeds £90,000 in any rolling 12 months, or you expect to in the next 30 days. Some contractors register voluntarily below that to reclaim input VAT or look established to clients. We watch your rolling total so you register on time and avoid late-registration penalties.
Travel to a temporary workplace is allowable, but a site becomes permanent once you expect to spend more than 40% of your time there for over 24 months, after which the relief stops. You can claim 55p a mile for the first 10,000 business miles and 25p after, plus a reasonable home-office cost and overnight subsistence when staying away. We keep the records HMRC expects to see.
19% on profits up to £50,000, the 25% main rate above £250,000, and an effective rate between the two via marginal relief in between. Those thresholds shrink if you have associated companies, which catches contractors with more than one company, so we check that before filing.
Everything, on a rolling monthly basis with no long tie-in: bookkeeping, VAT, payroll, company accounts, Corporation Tax and your personal Self Assessment, with a named qualified accountant who replies within 72 hours. Pricing is fixed at £99, £199 or £499 a month depending on your needs, backed by a 30-day money-back guarantee.
Plain-English explainers, kept current with the latest HMRC rules.
Zmartly Ltd · 20–22 Wenlock Road, London N1 7GU · 020 8175 5145 · info@zmartly.co.uk
ICAEW, ACCA and AAT qualified accountants.