Regex Tester & Validator

Extracts financial line items from invoice or receipt text, capturing Subtotal, Tax, Shipping & Handling (S&H), S&H Tax, and Total amounts. The regex handles two invoice formats: one with a separate Tax line before S&H, and another without. Each captured value expects a currency symbol followed by digits (e.g., $123.45). Useful for automated invoice processing and receipt data extraction.