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Updated 2025-06-04·Editorial policy·Trading system

What is Wash Sale Rule?

Wash sale rule (US) denies loss deduction when substantially identical security is bought within 30 days.

Formula

Wash Sale Window = [Sale Date − 30 days] through [Sale Date + 30 days]

Indian market context (NSE)

Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how Wash Sale Rule shows up on Indian index, equity, and futures books — update to live quotes in your journal.

Nifty 50 perspective

Wash Sale Rule in Indian context at Nifty 24,300: apply SEBI/regulatory framing where relevant and tag index trades separately in weekly review.

Reliance Industries perspective

Wash Sale Rule using Reliance at ₹1,300 as a liquid large-cap example — adjust numbers to your live quote and contract note.

Bank Nifty futures perspective

Wash Sale Rule with Bank Nifty futures at 55,000 — respect lot size 30 and quarterly vs monthly contract rules on NSE.

How to validate

  • Validate Wash Sale Rule with a written rule and at least 20 tagged examples.
  • Ask whether the reading changed because of process or one outlier trade.
  • Compare two independent time windows before adjusting position size.
  • Document validation date in weekly review notes.

How to track in TradeLyser

  • Mention Wash Sale Rule in trade comments when it influenced the decision.
  • Mirror the term in weekly review questions for consistency.
  • Filter trades mentioning the concept during monthly analytics.
  • Cross-link to related glossary terms in mentor notes.

Best practices

  • Teach Wash Sale Rule the same way to mentors and peers — shared vocabulary.
  • Re-read this page after major rule changes to Wash Sale Rule usage.
  • Prefer one improvement per month over ten simultaneous tweaks.
  • Link learn articles when Wash Sale Rule needs deeper study.

Common pitfalls

How to use this in TradeLyser

Tag tax-motivated sales; note repurchase dates in investment log.

Related terms

FAQ

Wash sale on NSE stocks?

Primarily US IRS concept — confirm local law.

Trading journal need wash tracking?

Only if tax lot management is your workflow.

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