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NZ GST Calendar and Threshold

New Zealand GST return due dates (28th rule with the 7 May and 15 January exceptions), the NZ$60,000 registration test, filing-frequency limits and exact 15% splits, each with its Inland Revenue source

Unify Dynamics LLC

Documentation
Tools5read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

My customer paid NZ$115 including GST: how much of that is GST, and what is the net amount?
Tools called
gst_split
My sales were NZ$58,000 over the last 12 months and I expect NZ$65,000 next year: do I have to register for GST?
Tools called
check_registration_threshold
When is the GST return for the period ending 31 March 2027 due?
Tools called
next_gst_due
Every Monday: which GST deadlines fall in the next 14 days for my two-monthly returns?
Tools called
upcoming_gst_deadlines
Can I file GST six-monthly with sales of NZ$300,000 a year?
Tools called
filing_frequency_rules
Why is the GST return for the period ending 31 October 2026 due on 30 November and not the 28th?
Tools called
next_gst_due

About

Read-only reference and arithmetic for New Zealand GST. Finds the due date of a GST return and payment for a taxable period (the 28th of the month after the period ends, with the periods ending 31 March and 30 November due 7 May and 15 January), lists the deadlines that fall in the next N days for a monthly, two-monthly or six-monthly filer, tests turnover against the NZ$60,000 registration wording, states the filing-frequency limits (six-monthly under NZ$500,000 of sales, monthly over NZ$24 million) and splits an amount into net and GST at 15% (GST-inclusive amounts use 3/23). The Inland Revenue pages read do not state what happens when a due date falls on a weekend or public holiday, so a next-working-day date is given separately, labelled, and only for 2026 and 2027 where the national holiday list was verified. Taxable supply information (invoice) thresholds could not be read and are not covered. General information as of 2026-09-29. Independent; not affiliated with Inland Revenue or any government body.

Sources: Reference data from official sources (ird.govt.nz); every answer states its source, date and validity period.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

5 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Look up & validate1 tools
  • Check registration thresholdTest turnover against the NZ$60,000 registration wording: last 12 months, or expected in the next 12 months.
Reference & guides4 tools
  • Gst splitSplit an amount into net and GST at 15%: from a GST-inclusive amount (3/23) or from a GST-exclusive amount (15%).
  • Next gst dueDue date of the GST return and payment for a taxable period: the 28th rule and the March and November exceptions, plus a next-working-day date for…
  • Upcoming gst deadlinesGST return and payment deadlines falling in the next N days for a filer with a known period end and a filing frequency.
  • Filing frequency rulesThe GST filing frequencies and the sales limits Inland Revenue states for six-monthly and monthly filing.

Information

PublisherUnify Dynamics LLC
CategoryMoney & business
LanguagesEnglish
Built forNew Zealand
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://nz-gst-calendar.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryNew Zealand
FunctionInvoicing & tax
LayerDeep connectors

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Documentation

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NZ GST Calendar and Threshold — connector documentation

  • MCP endpoint: https://nz-gst-calendar.connectorbay.com/mcp
  • REST API: POST https://nz-gst-calendar.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://nz-gst-calendar.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: none required. An optional Authorization: Bearer <key> raises rate limits.
  • Health: https://nz-gst-calendar.connectorbay.com/health · Tool schemas: https://nz-gst-calendar.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/nz-gst-calendar · agent@connectorbay.com

What NZ GST Calendar and Threshold is for

Read-only reference and arithmetic for New Zealand GST. Finds the due date of a GST return and payment for a taxable period (the 28th of the month after the period ends, with the periods ending 31 March and 30 November due 7 May and 15 January), lists the deadlines that fall in the next N days for a monthly, two-monthly or six-monthly filer, tests turnover against the NZ$60,000 registration wording, states the filing-frequency limits (six-monthly under NZ$500,000 of sales, monthly over NZ$24 million) and splits an amount into net and GST at 15% (GST-inclusive amounts use 3/23). The Inland Revenue pages read do not state what happens when a due date falls on a weekend or public holiday, so a next-working-day date is given separately, labelled, and only for 2026 and 2027 where the national holiday list was verified. Taxable supply information (invoice) thresholds could not be read and are not covered. General information as of 2026-09-29. Independent; not affiliated with Inland Revenue or any government body.

Ask your assistant things like:

  • "My customer paid NZ$115 including GST: how much of that is GST, and what is the net amount?"
  • "My sales were NZ$58,000 over the last 12 months and I expect NZ$65,000 next year: do I have to register for GST?"
  • "When is the GST return for the period ending 31 March 2027 due?"
  • "Every Monday: which GST deadlines fall in the next 14 days for my two-monthly returns?"
  • "Can I file GST six-monthly with sales of NZ$300,000 a year?"
  • "Why is the GST return for the period ending 31 October 2026 due on 30 November and not the 28th?"

What it does

  • gst_split: Split an amount into net and GST at 15%: from a GST-inclusive amount (3/23) or from a GST-exclusive amount (15%).
  • check_registration_threshold: Test turnover against the NZ$60,000 registration wording: last 12 months, or expected in the next 12 months.
  • next_gst_due: Due date of the GST return and payment for a taxable period: the 28th rule and the March and November exceptions, plus a next-working-day date for 2026 and 2027.
  • upcoming_gst_deadlines: GST return and payment deadlines falling in the next N days for a filer with a known period end and a filing frequency.
  • filing_frequency_rules: The GST filing frequencies and the sales limits Inland Revenue states for six-monthly and monthly filing.

Data sources

Reference data from official sources (ird.govt.nz); every answer states its source, date and validity period.

What it is not

NZ GST Calendar and Threshold is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Names of rails, schemes and standards are used only to say what a tool works with. It is read-only: it never sends, pays, files or signs anything for you, and it never looks up private individuals.

Not advice. General information only, not legal, tax, accounting or payment advice. NZ GST Calendar and Threshold is an independent tool: it is not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Rates, thresholds and rules change; check the cited official source and confirm with a qualified professional before you rely on a result.

Built for: New Zealand. Languages: English.

Tools

Look up & validate

check_registration_threshold — Test turnover against the NZ$60,000 registration wording: last 12 months, or expected in the next 12 months. Use for "My sales were NZ$58,000 over the last 12 months and I expect NZ$65,000 in the next 12: do I have to register for GST?". Args: turnover_last_12_months, expected_next_12_months.

Reference & guides

gst_split — Split an amount into net and GST at 15%: from a GST-inclusive amount (3/23) or from a GST-exclusive amount (15%). Use for "My customer paid NZ$115 including GST: how much of that is GST?". Args: amount, basis.

next_gst_due — Due date of the GST return and payment for a taxable period: the 28th rule and the March and November exceptions, plus a next-working-day date for 2026 and 2027. Use for "When is the GST return for the period ending 31 March 2027 due?". Args: period_end.

upcoming_gst_deadlines — GST return and payment deadlines falling in the next N days for a filer with a known period end and a filing frequency. Use for "Every Monday: which GST deadlines fall in the next 14 days for my two-monthly returns?". Args: period_end, filing_frequency, on_date, days.

filing_frequency_rules — The GST filing frequencies and the sales limits Inland Revenue states for six-monthly and monthly filing. Use for "Can I file GST six-monthly if my sales are NZ$300,000 a year?". Args: sales_last_12_months.

Conventions

  • Read-only. Every tool reads public data or computes; nothing is written anywhere and nothing about the user is stored.
  • Result envelope. ok: true with data, or ok: false with a structured error (bad_input, not_found, upstream_error). degraded lists optional sources that were unreachable.
  • Rate limits. Free tier 60 tool calls/minute and 300/day per user (keyed on the user identifier supplied by the host agent, else client IP); Pro keys raise this. Over-limit calls return HTTP 429 with Retry-After. initialize and tools/list are never counted.

Support

agent@connectorbay.com · connectorbay.com/nz-gst-calendar/support

Privacy policy

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NZ GST Calendar and Threshold — Privacy Policy

Effective 29 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What NZ GST Calendar and Threshold is. NZ GST Calendar and Threshold is a connector (an MCP server and REST API) that AI assistants call on your behalf: New Zealand GST return due dates (28th rule with the 7 May and 15 January exceptions), the NZ$60,000 registration test, filing-frequency limits and exact 15% splits, each with its Inland Revenue source. You talk to your assistant; the assistant sends us only the arguments needed for that one request.

What we receive. The arguments of each tool call, the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Nothing is stored. Every tool is a local calculation or a lookup against bundled reference data; no request is forwarded to any third party. Arguments are used for that one response and are not logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant, your name, contacts or account credentials, and we build no profile: each request is answered independently. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses and request paths, not request bodies) are kept for up to 30 days for security and abuse prevention.

Sub-processors. None. Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information.

Children. NZ GST Calendar and Threshold is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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NZ GST Calendar and Threshold — Terms of Service

Effective 29 September 2026. These terms govern use of the NZ GST Calendar and Threshold connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. NZ GST Calendar and Threshold provides: New Zealand GST return due dates (28th rule with the 7 May and 15 January exceptions), the NZ$60,000 registration test, filing-frequency limits and exact 15% splits, each with its Inland Revenue source. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
  2. General information, not professional advice. Output is general information and a drafting aid. It is not legal, tax, accounting, financial or payment advice, and it is not a filing or a payment instruction. General information only, not legal, tax, accounting or payment advice. NZ GST Calendar and Threshold is an independent tool: it is not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Rates, thresholds and rules change; check the cited official source and confirm with a qualified professional before you rely on a result.
  3. Independent. NZ GST Calendar and Threshold is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Official names are used only to describe what a tool works with.
  4. Sources and dates. Reference values state their source, date and validity period. Rules change: check the cited official source before you rely on a result.
  5. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to look up private individuals or to circumvent any authority's controls.
  6. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  7. Data. Our Privacy Policy describes what we process. In short: your input is answered on our server and nothing is stored.
  8. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  9. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service. Our total liability is limited to US $100.
  10. Governing law. California law; venue in San Mateo County, California.
  11. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/nz-gst-calendar

Support

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NZ GST Calendar and Threshold support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. NZ GST Calendar and Threshold never asks for them.

Get NZ GST Calendar and Threshold

Free · No sign-in · Read-only

Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://nz-gst-calendar.connectorbay.com/mcp
{
  "mcpServers": {
    "nz-gst-calendar": {
      "type": "http",
      "url": "https://nz-gst-calendar.connectorbay.com/mcp"
    }
  }
}