bd-income-tax

bd-income-tax is a skill for Claude Code from arifulislamat/bd-income-tax-skills. It costs 149 tokens per session (2,533 once invoked), scanned A, original, MIT.

A calculator and explainer for Bangladesh individual income tax under the Income Tax Act 2023 and current Finance Act. It covers personal income, not company tax or VAT.

In plain words
What is it for?
Use it to calculate and explain personal Bangladesh tax for the applicable income year, including special thresholds for listed taxpayer groups and salary income.
Why use it?
It helps determine the correct assessment year, tax-free threshold, tax slabs, exemptions, investment rebate, and minimum tax without relying on outdated assumptions or hand calculations.

Skill for Claude Code

Written for Claude Code: $CLAUDE_PLUGIN_ROOT variable.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the bd-income-tax plugin — 1 skill shipped together

Good fit Use it to calculate and explain personal Bangladesh tax for the applicable income year, including special thresholds for listed taxpayer groups and salary income.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add arifulislamat/bd-income-tax-skills
Claude Code
/plugin install bd-income-tax

Made for: Claude Code.

Or install bd-income-tax, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bd-income-tax

README.md
[![agentmods](https://agentmods.dev/badge/skills/arifulislamat/bd-income-tax-skills/bd-income-tax/github.svg)](https://agentmods.dev/skills/arifulislamat/bd-income-tax-skills/bd-income-tax)
Your own site
<a href="https://agentmods.dev/skills/arifulislamat/bd-income-tax-skills/bd-income-tax"><img src="https://agentmods.dev/badge/skills/arifulislamat/bd-income-tax-skills/bd-income-tax/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bd-income-tax

Your own site · 80×15
<a href="https://agentmods.dev/skills/arifulislamat/bd-income-tax-skills/bd-income-tax"><img src="https://agentmods.dev/badge/skills/arifulislamat/bd-income-tax-skills/bd-income-tax.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 149 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,533 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00149 $0.02533
Opus 5 $0.00075 $0.01267
Sonnet 5 $0.00030 $0.00507
Haiku 4.5 $0.00015 $0.00253

Measured 12d ago against content hash 1b2b6f7f95e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

bd-income-tax scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/tax_calc.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/bd-income-tax/SKILL.md · 182 lines

How it starts

The opening of the file, as written. The whole thing — 182 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bangladesh individual income tax

Compute and explain personal/individual Bangladesh income tax. Scope is individuals only — not corporate tax or VAT. All arithmetic is done by scripts/tax_calc.py; never hand-calculate.

1. Determine the assessment year first

Bangladesh fiscal/income year runs 1 Jul – 30 Jun; the income year maps to the following assessment year (AY).

Income year Assessment year Governing law General threshold
1 Jul 2024 – 30 Jun 2025 AY 2025-26 Finance Ordinance 2025 350,000
1 Jul 2025 – 30 Jun 2026 AY 2026-27 (primary) ITA 2023 + Finance Act 2026 400,000
1 Jul 2026 – 30 Jun 2027 AY 2027-28 (legislated) mirrors AY 2026-27 (Finance Act 2026 multi-year schedule) until the Finance Act 2027 400,000
  • Default: if the user gives a current salary/income with no year, assume income year FY 2025-26 → AY 2026-27.
  • For "what will I owe next year" questions (e.g. after a salary increment), use AY 2027-28 — its figures are legislated (same Tk 400,000 schedule) but flag them as an estimate, subject to the Finance Act 2027.
  • State the assessment year and governing law at the top of every answer.
  • The Finance Act 2026 raised the general tax-free threshold to Tk 400,000 on passage (up from the Tk 375,000 originally proposed) — use 400,000 for AY 2026-27.

2. Read the right reference file (progressive disclosure)

Read only the file for the relevant year, plus shared files as needed:

  • references/ay-2026-27.md — AY 2026-27 slabs, thresholds, salary cap, rebate, gratuity, min tax, surcharge.
  • references/ay-2025-26.md — prior-year figures (note the 5% slab still applies that year).
  • references/ay-2027-28.md — next year; legislated to mirror AY 2026-27 (flag as estimate).
  • references/procedure.md — the ordered 9-step procedure + worked example.
  • references/filing.md — TIN, PSR, e-return, forms, Tax Day, penalties.
  • references/sources.md — source keys; cite the source for every rate/threshold.

Read the full file on GitHub · 182 lines

Files

What ships with it

9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 182 lines · 149 tokens per session scan A 1b2b6f7f95e9

Subscribe to this mod's changes

bd-income-tax is a skill published in the GitHub repository arifulislamat/bd-income-tax-skills (3 stars, last pushed 2mo ago), licensed MIT. It adds 149 tokens to every session and 2,533 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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