Margin calculator: Reg T, maintenance and call price
Long: equity = market value − debit, call below 25% of market value. Short: equity = credit − market value, call below 30% (or $5 a share).
- Reg T deposit (50%)
- $20,000
- Debit balance (Dr)
- $20,000
- Market value now (LMV)
- $30,000
- Equity (LMV − Dr)
- $10,000
- Maintenance (25% of LMV)
- $7,500
- Above maintenance
- $2,500
- Call if the price falls below
- $26.67
Firm house requirements can be stricter.
Want graded practice? Try the free drills.
For study only. Not investment, tax or legal advice.