Ag Abst logo

Ag Abst

Organization
openaccountants
ag-abst

Prepare ordinary 17% ABST calculations and a return calendar using enacted amendments instead of the older FAQ, with registration and relief gaps explicit.

Overview

Publisheropenaccountants
Repositoryopenaccountants
Skill nameag-abst
Stars
464
Forks
65
Bundled files
Instructions only
LicenseAGPL-3.0
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by openaccountants on GitHub. Read the source before you install it.

Installation

Install the Ag Abst AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/openaccountants/openaccountants/tree/main/agent-skills/ag-abst
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/openaccountants/openaccountants.git /tmp/openaccountants
mkdir -p .claude/skills
cp -r /tmp/openaccountants/agent-skills/ag-abst .claude/skills/ag-abst
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Ag Abst in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Ag Abst on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Ag Abst is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Antigua and Barbuda sales tax: rates and returns

Source-cited draft; independent review pending. Sources accessed 22 October 2026. This Guide covers the stated topic only, not comprehensive country coverage.

Rate evidence

Section 2 of the Revenue (Miscellaneous Provisions) Act 2023 replaces the 14% and 15% figures in section 8(3)(b) and (d) with 17%. It also changes the passenger-transport exemption to exclude tour operators. Act 13/2023, pp4–5. The government Consumer Affairs Division confirms the standard increase took effect 1 January 2024. Official 2024 consumer guidance.

The IRD's still-linked older FAQ prints 15% standard and 14% accommodation rates. Those figures must not drive ordinary current-rate calculations. This draft does not verify temporary reduction days, concessions, tour-operator transition dates or zero/exempt classifications.

Return deadline

The ABST (Amendment) Act 1/2024 replaces section 39(1): each tax-period return is due no later than 15 calendar days after the period ends. Its commencement clause applies this from the period ending 31 March 2024 onward. Act 1/2024, ss1 and 3, pp4–5.

For a period ending 30 September 2026, the nominal return date is 15 October 2026. Do not use the older FAQ's one-calendar-month description. Payment timing, weekend/holiday extensions and any subsequent special notices need their own verified authority; this draft does not assume that changing section 39 automatically proves every payment rule.

Ordinary taxable-sale calculation

Assume registered status and an already verified supply subject to 17%, outside any special relief period:

ItemEC$
Net taxable sales100,000
Output ABST: 100,000 × 17%17,000
Gross invoices117,000
Independently established deductible input ABST7,000
Output less that input amount10,000

For a tax-inclusive price of EC$117, the tax component is 117 × 17/117 = EC$17. Multiplying the inclusive price by 17% would overstate the tax. The EC$7,000 input figure is an assumed reviewed amount, not an assertion that all purchases are creditable.

Preparation and remaining work

Build a transaction register with supply date, net value, ABST, invoice reference and treatment. Separate ordinary taxable sales, zero-rated sales, exempt supplies, imports and adjustments. Reconcile the register to the sales ledger, tax control account and return. Maintain a dated rule for each exceptional transaction.

Registration thresholds and compulsory professional registration, input-credit restrictions, invoices, imports, refund conditions, records, penalties and current exemption instruments require further primary-law review. The older FAQ is useful for locating these questions, but its obsolete rates and deadline prevent treating it as a complete current compliance checklist.

Review output

Retain the calculation, source versions and factual classification. A qualified local reviewer must check current amendments and the actual case before anyone files, pays or relies on the result. No professional attestation is claimed.

Contributed by Ryan Duguid.


Talk to a verified accountant

This guide is maintained by the OpenAccountants network — accountants who put their name behind the tax answers AI gives people. The live, always-current version (and the professional behind it) is at openaccountants.com.

General reference only. This document does not constitute tax, legal, or financial advice. Verify figures against the cited primary sources or with a licensed professional before relying on them.

Today's figures and who stands behind this skill

This file is an AI skill (tax rules your AI follows) from OpenAccountants, copied on 2026-10-23. Rates, thresholds and deadlines change. For the current version of this skill, its official sources and the named accountant (if any) who stands behind it, call get_skill with slug ag-abst on the OpenAccountants connector (https://www.openaccountants.com/connect), or read https://www.openaccountants.com/skills/ag-abst. If neither is available, confirm every figure against the official source pages cited above before relying on it.

Frequently asked questions

What does the Ag Abst AI skill do?

Prepare ordinary 17% ABST calculations and a return calendar using enacted amendments instead of the older FAQ, with registration and relief gaps explicit.

Why use Ag Abst on TypingMind?

Because you install it once and use it with any model. Ag Abst is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Ag Abst in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/openaccountants/openaccountants/tree/main/agent-skills/ag-abst. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Ag Abst?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Ag Abst?

As many as you like. As long as a model supports skills, you can use Ag Abst with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Ag Abst AI skill free?

Yes. It is published on GitHub by openaccountants under the AGPL-3.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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