Swap Fee Calculator
Calculate the daily swap fees for holding positions overnight in the forex market.
Note: most brokers charge triple swap on Wednesdays to account for weekend settlement, so a position held over a Wednesday incurs roughly two extra days of swap.
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Quick answer
Swap (rollover) is the overnight interest charged or credited for holding a position past the broker's daily cutoff. Daily swap ≈ lots × contract size × the broker's daily swap rate, and most brokers charge triple swap on Wednesdays to cover the weekend.
What is the Swap Fee Calculator?
What Is a Forex Swap Fee Calculator?
The Swap Fee Calculator reveals the hidden overnight cost (or income) of holding forex positions past the daily rollover time. When you keep a trade open overnight, brokers charge or credit your account based on the interest rate differential between the two currencies in the pair. This swap — also called rollover or overnight financing — can significantly impact profitability for swing traders and position holders.
Understanding swap rates is essential because they vary dramatically by currency pair, direction (long vs. short), and broker. Some positions earn positive swaps (carry trade opportunities), while others incur substantial costs that erode profits over time. A trade that looks profitable on paper might actually lose money after accounting for weeks of negative swaps.
Why Swap Fees Matter
- Overnight Holding Costs: Every trade held past rollover (usually 5 PM EST / 10 PM GMT) incurs swap charges
- Carry Trade Strategy: Positive swaps allow traders to earn daily income by holding high-yield currencies against low-yield currencies
- Triple Swap Wednesday: Wednesday positions incur 3x swaps to account for weekend settlement (Saturday and Sunday)
- Broker Variation: Swap rates differ significantly between brokers — some charge 50% more than others for identical positions
- Hidden Cost: Many beginner traders overlook swaps and wonder why winning trades end up with less profit than expected
Swap Formula
Daily Swap = (Lot Size × Contract Size × Swap Rate) ÷ 10
Where:
- Swap Rate: Points charged or credited (provided by your broker, differs for long and short positions)
- Contract Size: 100,000 for standard lot, 10,000 for mini, 1,000 for micro
For multi-day positions: Total Swap = Daily Swap × Number of Days
How to Use This Calculator
How This Calculator Works
Step-by-Step Guide
- Select Currency Pair: Choose the pair you're trading or planning to hold overnight
- Enter Position Size: Input your lot size (standard, mini, or micro lots)
- Choose Direction: Select Long (buy) or Short (sell) — swap rates differ significantly by direction
- Input Swap Rate: Enter your broker's swap rate in points (found in MT4/MT5 under Symbol Specification)
- Enter Holding Period: Specify how many nights you plan to hold the position
- Calculate: View daily and total swap cost (or credit) in your account currency
- Where to Find Your Broker's Swap Rates:
- MT4/MT5: Right-click any symbol → Specification → Scroll to "Swap Long" and "Swap Short"
- Broker Website: Usually under Trading Conditions, Contract Specifications, or Fees
- cTrader: Click symbol info → View swap rates for long and short positions
Real-World Example
Real-World Examples
Example 1: Negative Swap (Costly Position)
- Pair: EUR/USD Long
- Position Size: 1.0 Standard Lot
- Swap Rate Long: -6.5 points
- Holding Period: 10 nights
Calculation:
Daily Swap = (1.0 × 100,000 × -6.5) ÷ 10 = -$65 per night
Total Swap (10 nights) = -$65 × 10 = -$650
Holding this position for 10 nights costs $650 in swaps alone. Your trade needs to gain 65 pips just to break even on financing costs.
Example 2: Positive Swap (Carry Trade)
- Pair: USD/JPY Long
- Position Size: 1.0 Standard Lot
- Swap Rate Long: +8.2 points
- Holding Period: 30 nights (1 month)
Calculation:
Daily Swap = (1.0 × 100,000 × +8.2) ÷ 10 = +$82 per night
Total Swap (30 nights) = +$82 × 30 = +$2,460
This carry trade earns $2,460 per month in swap income, regardless of price movement. Even if the trade is flat, you profit from the interest differential.
Example 3: Triple Swap Wednesday
- Pair: GBP/USD Short
- Position Size: 0.5 Lots
- Swap Rate Short: -4.0 points
- Day: Wednesday (3x swap)
Calculation:
Normal Daily Swap = (0.5 × 100,000 × -4.0) ÷ 10 = -$20
Wednesday Swap = -$20 × 3 = -$60
Holding through Wednesday rollover costs 3x the normal swap to account for Saturday and Sunday when markets are closed.
When to Use
When to Use This Calculator
- Swing Trading: Essential for any trade held more than 1-2 days — swap costs accumulate quickly
- Position Trading: Multi-week or multi-month positions require swap analysis as part of total cost calculation
- Carry Trade Planning: Identify positive-swap opportunities to earn passive income
- Before Wednesday: Decide whether to close before triple-swap or hold through
- Broker Comparison: Compare swap rates across brokers before opening long-term positions
- Profit Projection: Factor swap costs into your target profit calculations
Common Mistakes
Common Mistakes to Avoid
- Forgetting Triple Swap Wednesday: Many traders are surprised when Wednesday's swap charge is 3x normal. Plan accordingly — close positions Tuesday evening if swap costs are high.
- Ignoring Direction Asymmetry: Long and short swaps are rarely equal. EUR/USD long might cost -6.5 points while EUR/USD short earns only +0.5 points. Always check both directions.
- Using Outdated Swap Rates: Swap rates change frequently based on central bank interest rates. A pair that had positive swaps 6 months ago might now have negative swaps.
- Not Comparing Brokers: Swap rates vary 30-100% between brokers. A position costing $10/night at Broker A might cost $15/night at Broker B. This adds up over weeks.
- Overleveraging Carry Trades: Positive swaps seem like "free money," but carry trade positions can move against you. A +$50/day swap is meaningless if the price drops 200 pips.
- Assuming Islamic Accounts Are Free: Swap-free Islamic accounts often have administration fees or wider spreads that can exceed normal swap costs.
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