Overnight Fees
& Swaps
If you hold a trade past 00:00 server time, you pay a tax. While swaps are a legitimate banking mechanism based on interest rates, retail brokers have weaponized them into a hidden profit center.
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The Midnight
Tax
How central bank interest rate differentials are supposed to work vs. how they actually work.
Forex trades are settled in two business days (T+2). If you don't close your trade before the end of the day (usually 17:00 New York time), the broker "rolls" it over to the next day to prevent physical delivery of the currency.
The Theory (Interest Rates)
You are borrowing one currency to buy another. If the currency you bought has a higher central bank interest rate than the one you sold, you theoretically receive a positive swap (you get paid). If it's lower, you pay a negative swap.
The Reality (Markup)
Brokers apply a manual markup to both sides of the equation. This is why you will often see a negative swap whether you are buying OR selling. The broker simply tilts the math to ensure you are always bleeding equity overnight.
Wednesday Warning:
Because of the T+2 settlement rule, trades held over Wednesday night are charged triple swaps to account for the weekend. Many algorithms aggressively close trades before the Wednesday rollover to avoid this massive fee.
The Swap-Free
Illusion
Why 'Islamic Accounts' often cost more than standard accounts through hidden administrative fees.
"Swap-Free" or Islamic accounts are marketed to traders who cannot pay or receive interest due to religious beliefs, or to long-term swing traders looking to avoid overnight fees.
But the broker is not a charity. The liquidity providers still charge the broker interest. To cover this cost, brokers simply rename the fee and bake it into other parts of your trading conditions.
The Administrative Fee Loophole
Wider Spreads: Many brokers secretly widen the base spread on swap-free accounts. You don't pay overnight, but you pay a massive premium the second you click "Buy".
Fixed Nightly Commissions: Instead of calling it "interest", they charge a fixed $5-$10 "administrative fee" per lot, per night. Over weeks, this often totals far more than standard swap math.
Time Limits: Most swap-free conditions only last for 5-7 days. If you hold the trade longer, they retroactively apply all the missed fees.
Continue Your Broker Mechanics
Leverage & Margin Math
See how overnight fees gradually erode your Free Margin until you hit a Margin Call.
Trading Sessions & Liquidity
Learn what happens to spreads right when the midnight rollover tax is applied.
B-Book: Your Loss, Their Salary
Understand how B-Book brokers keep 100% of the negative swaps you pay.
Live Robot Rankings
See how negative swap costs affect long-term EA profitability in our tests.