vat-compliance-optimization

vat-compliance-optimization is a skill for Claude Code, Codex from guoliang1114-boop/AriaAI. It costs 54 tokens per session (2,241 once invoked), scanned A, original, MIT.

A guide to value-added tax, a tax added to goods and services at different points in the supply chain, under Chinese tax rules.

In plain words
What is it for?
Use it to assess VAT rates, mixed sales, taxpayer status, input invoices, excess input-tax refunds, cross-border services, and related filing decisions.
Why use it?
It helps businesses review tax calculations, choose applicable treatments, manage input-tax deductions, and identify compliant ways to reduce avoidable tax costs.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to assess VAT rates, mixed sales, taxpayer status, input invoices, excess input-tax refunds, cross-border services, and related filing decisions.

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Install with agentmods
npx agentmods add skills/guoliang1114-boop/ariaai/vat-compliance-optimization
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add guoliang1114-boop/AriaAI --skill vat-compliance-optimization
Clone the repo
git clone --depth 1 https://github.com/guoliang1114-boop/AriaAI

Made for: Claude Code, Codex.

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 vat-compliance-optimization

README.md
[![agentmods](https://agentmods.dev/badge/skills/guoliang1114-boop/ariaai/vat-compliance-optimization/github.svg)](https://agentmods.dev/skills/guoliang1114-boop/ariaai/vat-compliance-optimization)
Your own site
<a href="https://agentmods.dev/skills/guoliang1114-boop/ariaai/vat-compliance-optimization"><img src="https://agentmods.dev/badge/skills/guoliang1114-boop/ariaai/vat-compliance-optimization/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 vat-compliance-optimization

Your own site · 80×15
<a href="https://agentmods.dev/skills/guoliang1114-boop/ariaai/vat-compliance-optimization"><img src="https://agentmods.dev/badge/skills/guoliang1114-boop/ariaai/vat-compliance-optimization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,241 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00054 $0.02241
Opus 5 $0.00027 $0.01120
Sonnet 5 $0.00011 $0.00448
Haiku 4.5 $0.00005 $0.00224

Measured 12d ago against content hash c50801cf75b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

vat-compliance-optimization 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.

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/vat-compliance-optimization/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

增值税合规与优化

When To Use

  • 企业需要评估增值税税负率是否合理
  • 存在大额留抵税额需要规划退税策略
  • 混合销售、兼营行为需要拆分适用税率
  • 一般纳税人与小规模纳税人身份选择
  • 进项税额抵扣链条断裂或不完整
  • 涉及跨境服务的零税率/免税选择

Tools

  • read — 读取企业财务报表、纳税申报表、发票明细
  • grep — 搜索进销项数据、税率适用情况
  • bash — 计算税负率、留抵税额变动
  • webfetch — 查询最新增值税政策文件

Framework

法律依据

法规 核心条款
《增值税暂行条例》 第1条 纳税义务人;第2条 税率;第8条 进项抵扣
《增值税暂行条例实施细则》 第5条 混合销售;第6条 兼营行为
财税〔2016〕36号 全面营改增,附录1/2/3应税行为范围
国家税务总局公告2019年第20号 留抵退税制度
财税〔2018〕33号 小规模纳税人标准调整
OECD VAT/GST Guidelines (2022) International best practices for VAT neutrality

税率表

税率 适用范围
13% 销售货物、加工修理修配劳务、有形动产租赁
9% 交通运输、建筑、基础电信、不动产租赁/销售、农产品
6% 金融、现代服务、生活服务、增值电信、无形资产转让
0% 出口货物、跨境应税服务(零税率)

进项税额抵扣规则

  • 凭票抵扣:增值税专用发票、海关进口增值税专用缴款书、通行费电子发票
  • 计算抵扣:农产品(9%或10%扣除率)、通行费(桥闸5%)
  • 不得抵扣:用于简易计税、免税项目、集体福利、个人消费(第10条)
  • 不动产分期抵扣:2019年4月1日起一次性抵扣

留抵退税政策

  • 增量留抵税额 ≥ 0 且连续6个月(按月)或连续两个季度(按季)
  • 退还比例:60%(一般行业)/ 100%(先进制造业等)
  • 适用条件:纳税信用等级A/B级,36个月内无骗税记录

常见优化路径

  1. 纳税人身份优化:评估年销售额与进项结构,选择一般/小规模
  2. 税率拆分:混合销售拆分为独立业务线,适用低税率
  3. 进项管理:确保及时取得合规抵扣凭证,避免进项转出
  4. 留抵退税:符合条件及时申请,释放现金流
  5. 税收优惠叠加:即征即退、先征后退政策的适用(软件产品、资源综合利用)

Workflow

  1. 数据采集:获取近12个月增值税申报表、进项/销项明细、发票台账
  2. 税负分析:计算实际税负率,与行业预警值对比
  3. 进销项匹配:检查抵扣链条完整性,识别不可抵扣进项
  4. 政策适用检查:逐项核对企业适用的税收优惠
  5. 优化方案设计:针对识别出的问题设计2-3套优化方案
  6. 风险评估:评估每个方案的税务风险和实施难度

Output Format

# 增值税分析报告

## 一、企业基本信息
- 企业名称:
- 纳税人类型:一般纳税人 / 小规模纳税人
- 所属行业:
- 分析期间:

## 二、增值税税负分析
| 指标 | 金额/比率 | 行业参考值 | 偏差 |
|------|----------|-----------|------|
| 销项税额 | | | |
| 进项税额 | | | |
| 应纳税额 | | | |
| 税负率 | | | |
| 留抵税额 | | | |

## 三、进销项合规性诊断
- 进项抵扣合规率:
- 不得抵扣进项占比:
- 发票取得及时性:
- 抵扣链条断裂点:

## 四、优化建议
### 方案一:[方案名称]
- 措施描述:
- 预计节税金额:
- 实施难度:高/中/低
- 风险提示:

### 方案二:[方案名称]
- 措施描述:
- 预计节税金额:
- 实施难度:
- 风险提示:

## 五、实施路线图
| 阶段 | 时间节点 | 责任人 | 关键动作 |
|------|---------|--------|---------|
| | | | |

## 六、风险提示
- 合规风险:
- 政策变动风险:
- 操作风险:

Diagnostic Questions

  • 企业年销售额是否接近小规模纳税人标准(500万元)?
  • 是否存在大量不可抵扣的进项税额(如用于免税项目)?
  • 近12个月留抵税额变动趋势如何?
  • 是否涉及混合销售或兼营行为?
  • 跨境业务是否已享受零税率或免税?
  • 软件产品、资源综合利用等是否有即征即退资格?

Read the full file on GitHub · 197 lines

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 · 197 lines · 54 tokens per session scan A c50801cf75b4

Subscribe to this mod's changes

vat-compliance-optimization is a skill published in the GitHub repository guoliang1114-boop/AriaAI (37 stars, last pushed today), licensed MIT. It adds 54 tokens to every session and 2,241 once invoked, about $0.0003 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 2026-08-30.

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