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CLAUDE-5-5-SONNET
A single-file Claude Code app that calculates the UK High Income Child Benefit Charge. Handles the pension-contribution method correctly (salary sacrifice vs net-pay vs relief-at-source — the part most people get wrong), shows the taper between £60k-£80k, identifies which partner is liable, and flags the reporting obligation. 2026/27 figures, fact-checked against gov.uk.
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Added 20 hours ago
