Background context for the Electronic Bookkeeping Act (電子帳簿保存法) in the shinkoku tax filing plugin. Contains requirements for electronic bookkeeping, scanner storage, mandatory electronic transaction data storage, and shinkoku's compliance status. This skill is not user-invocable — Claude loads it automatically when responding to electronic bookkeeping compliance questions.
SkillScore86Maintained
Automatic
◆Finance & Accounting pack
Last verified 8/21/2026
What it changes
Passed 19 of 22 test cases with the skill, and 15 of 22 without it.
Without skill68%
With skill86%
Checks it passed that the model alone missed
Mentions the future 750,000 yen deduction tier introduced in Reiwa 9
States that shinkoku complies with electronic bookkeeping requirements
Confirms that shinkoku satisfies both general (一般) and superior (優良) requirements
and 4 more in the full report
5 fixed14 passed either way2 still failing1 broke
Pass-rate lift
+18 pp
Tokens
-19%
Agent turns
0%
Response time
-39%
Model gemini-3.6-flashMeasured 8/21/2026v119 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.