In the UK
41 sections, about 13,400 wordsRenewals and deadlines Greymill tracks
- Tax adviser registration: tranche 2 window closesOne-off
- Tax adviser registration: tranche 3 window closesOne-off
- PI insurance renewalYearly
Figures Greymill knows, with their sources
- £5,000Penalty HMRC normally charges for each prohibited interaction by a tax adviser who is not registered.As of Oct 2026. Source: gov.uk
- £15 millionSmall company turnover limit for Companies Act accounts, alongside a £7.5 million balance sheet limit.As of Oct 2026. Source: legislation.gov.uk
- 8%Statutory interest on a late business invoice: 8% over the reference rate.As of Oct 2026. Source: legislation.gov.uk
Words of the trade it understands
- engagement letter
- professional clearance
- practising certificate
- AML supervisor
- MLRO
- CDD
- SARs
- DAMLs
Owners ask, for example
- Do I need to register with HMRC as a tax adviser, and by when?
- The previous accountant has not answered my professional clearance letter. Can I still act?
In the US
32 sections, about 10,000 wordsRenewals and deadlines Greymill tracks
- PTIN renewalYearly
Figures Greymill knows, with their sources
- $2,000Reporting threshold for Form 1099-NEC and many Form 1099-MISC payments from 2026.As of Oct 2026. Source: irs.gov
- $201,750Section 199A (QBI) taxable income threshold for most returns in 2026; $403,500 for joint returns.As of Oct 2026. Source: irs.gov
- $665Preparer due-diligence penalty per failure under IRC 6695(g), for returns filed in 2027.As of Oct 2026. Source: irs.gov
Words of the trade it understands
- engagement letter
- CPA license
- firm permit
- PTIN
- EFIN
- Circular 230
- 7216 consent
- realization
Owners ask, for example
- When does my PTIN need renewing?
- Do I need a written information security plan for a three-person firm?
Questions owners ask
Is there an AI for accounting and bookkeeping?+
Yes. Greymill is an AI team for small businesses that is briefed on accounting and bookkeeping, written separately for the UK and the US: 41 sections for the UK and 32 for the US, about 23,400 words of reviewed industry knowledge, as of Oct 2026.
Which renewals and deadlines does Greymill track for accounting and bookkeeping in the UK?+
In the UK: Tax adviser registration: tranche 2 window closes (one-off); Tax adviser registration: tranche 3 window closes (one-off); PI insurance renewal (yearly). As of Oct 2026.
Which renewals and deadlines does Greymill track for accounting and bookkeeping in the US?+
In the US: PTIN renewal (yearly). As of Oct 2026.
Which figures does Greymill know for accounting and bookkeeping in the UK?+
Penalty HMRC normally charges for each prohibited interaction by a tax adviser who is not registered: £5,000 (gov.uk, as of Oct 2026). Small company turnover limit for Companies Act accounts, alongside a £7.5 million balance sheet limit: £15 million (legislation.gov.uk, as of Oct 2026). Statutory interest on a late business invoice: 8% over the reference rate: 8% (legislation.gov.uk, as of Oct 2026).
Which figures does Greymill know for accounting and bookkeeping in the US?+
Reporting threshold for Form 1099-NEC and many Form 1099-MISC payments from 2026: $2,000 (irs.gov, as of Oct 2026). Section 199A (QBI) taxable income threshold for most returns in 2026; $403,500 for joint returns: $201,750 (irs.gov, as of Oct 2026). Preparer due-diligence penalty per failure under IRC 6695(g), for returns filed in 2027: $665 (irs.gov, as of Oct 2026).
Does Greymill replace my accountant, solicitor or other professional advisers?+
No. Greymill gives you a whole team to think with every day: the numbers modelled, the contract read, the campaign planned, the hire prepared, the filing checklist ready, all before you speak to anyone by the hour. What Greymill produces is software output from the information you give it, so Greymill takes no instruction, owes no professional duty and 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. Customers arrive at their accountant or lawyer with the work done and the questions sharp, which is usually the cheapest hour they will ever buy.
How much does Greymill cost?+
Plans start at £100 a month plus VAT in the UK and $130 a month plus tax in the US. Every plan starts with a 7-day free trial on full Scale access, no card needed.
How Greymill helps
Tell Greymill about your business once. Its sixteen specialists share one memory of it, so the one you ask already knows your trade, your country and your numbers. Connect your books and inbox. Nothing is sent unless you press Send, and your books change only when you press Approve. Greymill files nothing unless you send it yourself and is not a regulated adviser: where a matter needs one, it says so and tells you what to take to them.