0s and 1s CIS calculators

Name: 0s and 1s CIS calculators
Author: uk.co.0sand1s

MCP serverMCP

Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification.

by uk.co.0sand1srepository ↗homepage ↗v1.0.1

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Evidence

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30-day availability36/36 checks ok

when	check	result	http	latency	detail
4 h ago	mcp initialize	ok	200	140 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
11 h ago	mcp initialize	ok	200	106 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
18 h ago	mcp initialize	ok	200	109 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
26 h ago	mcp initialize	ok	200	89 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
34 h ago	mcp initialize	ok	200	93 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
2 d ago	mcp initialize	ok	200	1052 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
2 d ago	mcp initialize	ok	200	90 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
2 d ago	mcp initialize	ok	200	320 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
3 d ago	mcp initialize	ok	200	92 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools
3 d ago	mcp initialize	ok	200	101 ms	server 0s and 1s 1.0.1 · protocol 2025-06-18 · 7 tools

Tools observed via MCP handshake

cis_deduction — Works out the CIS deduction on a payment to a subcontractor, from the gross bill to the net payment. Takes the gross including VAT, the VAT, the subcontractor's
cis_gross_up — Finds the gross amount (excluding VAT) that leaves a given net payment after the CIS deduction, for a subcontractor quoted a take-home figure. Takes the net, th
cis_tax_month — For a date, gives the CIS tax month it falls in (the 6th to the 5th), the tax year, the date the monthly return (CIS300) is due (the 19th, also the date for pay
cis_late_penalties — Works out the late filing penalties on one monthly CIS return under Finance Act 2009 Schedule 55: £100 the day after the 19th, £200 at 2 months, then the greate
cis_gross_payment_turnover_test — Checks the turnover test for CIS gross payment status (Finance Act 2004 Schedule 11, SI 2005/2045 reg 28): £30,000 net construction turnover for a sole trader;
cis_needs_verification — Says whether a contractor must verify a subcontractor with HMRC before paying them (SI 2005/2045 reg 6): not needed if the subcontractor was on one of this cont
cis_nil_return_check — Says whether a contractor must file a CIS nil return for a tax month (SI 2005/2045 reg 4(9A) and (9B), inserted by SI 2026/289 from 6 April 2026): due when a ma

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kind Official MCP Registry

name Official MCP Registry

repoUrl Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

homepageUrl Official MCP Registry

publisherName Official MCP Registry

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Official MCP Registryuk.co.0sand1s/cis

first seen 11 d ago · fetched 3 h agoopen ↗

Field history (7 recent events)

11 d ago · declared · summary → "Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification."
11 d ago · declared · description → "Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification."
11 d ago · declared · publisherName → "uk.co.0sand1s"
11 d ago · declared · homepageUrl → "https://0sand1s.co.uk/developers"
11 d ago · declared · repoUrl → "https://github.com/0sand1s-uk/cis-mcp"
11 d ago · declared · version → "1.0.1"
11 d ago · declared · protocols → ["mcp"]

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