When to ask MARCUS
- A deadline is coming and you want to know exactly what is due.
- You are not sure what you can and cannot claim.
- Your books are behind and you need a way to catch up.
What owners ask MARCUS
- I bought a van this year and use it about 80 percent for work. Explain how that is treated and what records I need to keep.
- What is due, and when, over the next six months? Give me a simple calendar.
- My books are three months behind. Give me the fastest honest way to catch up.
Quick asks in the app
- What tax is due and when?
- What can I claim as expenses?
- Get my books ready for year end
Not for MARCUS: Pricing and profitability decisions. That is MAYA.
Works alongside
- MAYA, Cash & ProfitCash, profit, prices and forecasts: whether the numbers work.Meet MAYA
- IVY, Rules & LicensingLicensing, inspections, safety and data rules, and the dates you must not miss.Meet IVY
Guides for this work
- When do I have to register for VAT in the UK?When taxable turnover for the last 12 months goes over £90,000 at a month end, or will in the next 30 days alone. Then tell HMRC within 30 days.Read the guide
- Do I have to collect sales tax in other states?Yes, once you have nexus there: a physical presence, or sales above the state's economic threshold since Wayfair (2018). Register before you collect.Read the guide
- What do I need to do to hire my first employee in the UK?Check the right to work, register for PAYE, insure, give written terms on day one, pay the minimum wage and enrol them in a workplace pension.Read the guide
- What do I need to do to hire my first employee in the US?Get an EIN and state payroll accounts, buy workers' comp where required, complete Forms I-9 and W-4, report the hire, then pay and withhold correctly.Read the guide
Free lessons MARCUS is part of
- Rent-a-chair and VAT: could HMRC say every stylist's takings are mine?Chair rent is VAT-able, and if the salon in reality supplies the haircut, every self-employed stylist's takings count towards your VAT turnover.Read the lesson
- Am I claiming the FICA tip credit, and do I owe tax on back-bar color?Salons can now claim the FICA tip credit on employees' tips, while back-bar product and New York City's service tax catch out owners who never checked.Read the lesson
- Why the builder took tax off my sparkle clean, and the VAT scheme that costs cleaners moreAn after-builders clean is a construction operation, so the main contractor deducts CIS and may need a reverse-charge invoice, and a labour-only cleaner on the Flat Rate Scheme usually pays more VAT, not less.Read the lesson
- Does my state charge sales tax on cleaning, and what do I file for subcontractors?Whether janitorial work is taxable depends on the state and the type of building, and the 1099-NEC threshold for paying subcontractors changed for 2026.Read the lesson
- Quoting the wrong VAT rate on a building job and paying it out of my marginAs of Oct 2026, building work can be 0%, 5% or 20% VAT depending on what is being built, and the rate has to be settled before you quote.Read the lesson
- Not knowing who owes sales tax on the materials and labor in my contractsWhether you pay tax on materials or collect it from the customer depends on the state, the type of work and how the contract is written.Read the lesson
Which plans include Tax & Bookkeeping
Scale includes all sixteen specialists. On Starter you choose three to work with ALEX, and on Growth nine, and you can swap any time. MARCUS shares one memory of your business with the rest of the team, so you only explain things once.
Questions owners ask
What does Greymill's Tax & Bookkeeping specialist do?+
MARCUS is Greymill's Tax & Bookkeeping specialist. Every business has tax and bookkeeping. MARCUS keeps you on top of both. Tax returns, bookkeeping and what you can claim.
When should I ask MARCUS?+
A deadline is coming and you want to know exactly what is due. You are not sure what you can and cannot claim. Your books are behind and you need a way to catch up.
Which Greymill plans include Tax & Bookkeeping?+
Scale includes all sixteen specialists. On Starter you choose three to work with ALEX, and on Growth nine, and you can swap any time.
Can MARCUS send emails or file anything for me?+
Not on its own. Nothing is sent unless you press Send, Greymill only changes your books when you press Approve and never makes a payment, and it files nothing unless you send it yourself. Where a matter needs a regulated professional to sign it off, Greymill says so and tells you exactly what to take to them.
Is there a free trial?+
Yes. Every plan starts with a 7-day free trial on full Scale access, no card needed, so you can try MARCUS with the whole team.
The rest of the team
- ALEX, Ask AnythingMeet ALEX
- AVA, StrategyMeet AVA
- ELLA, Daily OperationsMeet ELLA
- JAMES, Big ProjectsMeet JAMES
- THEO, TechnologyMeet THEO
- GRACE, Staff & HRMeet GRACE
- MAYA, Cash & ProfitMeet MAYA
- FELIX, Loans & FundingMeet FELIX
- DARA, Data & AnalyticsMeet DARA
- NINA, MarketingMeet NINA
- LUKE, WritingMeet LUKE
- COLE, Sales & QuotesMeet COLE
- BLAKE, CoachingMeet BLAKE
- LEO, Contracts & DisputesMeet LEO
- IVY, Rules & LicensingMeet IVY