In CFD trading, holding a position overnight will incur overnight funding charges. This mechanism is not an additional charge on the platform, but a simulated compensation for the time value of funds and the holding cost of the underlying assets. The design principle of Wmax is that all fees must be based on public interest rates, verifiable formulas, and be made clear to users before opening a position. This article explains its calculation logic, interest rate sources and transparency implementation methods.

The essence of financing costs: the cost difference between long and short directions

The core logic of overnight financing fees stems from the different economic attributes of long and short positions. Long CFD is equivalent to "borrowing funds to buy assets" and needs to pay financing costs; short selling is equivalent to "lending assets to obtain cash" and may obtain interest income (or pay less fees). Therefore, long orders usually charge fees, and short orders may return a small amount of interest in some varieties.

This fee is settled at 21:00 UTC every day and is only calculated for positions held past this point. Fee amount = Notional value of position × Annualized financing rate ÷ 365. Among them, annualized financing interest rate = reference base interest rate ± platform bonus. The specific symbols and values ​​vary depending on the product. For example, the interest rate for long foreign exchange orders = base interest rate + 2.5%, and the interest rate for short orders = base interest rate – 2.5%. The cost structure is asymmetric, but the rules are symmetric and public.

Source of interest rate: anchored to global benchmark, not determined by the platform

Wmax does not set its own base interest rate, but uses the internationally recognized risk-free interest rate indicator as its anchor:

Major currency pairs (such as EUR/USD): use the overnight index swap rate (OIS) of the corresponding currency, such as €STR (Euro), SOFR (USD); stock indices and commodities: use the mainstream risk-free interest rate in the jurisdiction where the trading platform is located as the benchmark (such as the British pound LIBOR replacement rate SONIA).

These interest rates are announced daily by central banks or financial infrastructure institutions in various countries. Wmax synchronizes the latest values ​​in real time on the "Product Information Page" and marks the data source link. The platform bonus component (usually 2%–3% annualized) is used to cover operational and counterparty risks and is also clearly listed on the same page. The interest rate can be checked, the bonus can be seen, and there are no hidden parameters.

Cost preview and real-time estimating tools

Before placing an order on the trading terminal, users can click the "Financing Fee Preview" button, and the system will dynamically calculate the cumulative fee estimate for the next 7 days based on the current interest rate, position direction and expected number of days. This estimate is based on current interest rates and if base rates change, actual charges will be adjusted accordingly.

In addition, the account overview page provides a real-time cumulative display of "today's financing charges". Each charge generates an independent running record, including: variety, direction, nominal value, applicable interest rate, calculation days and amount. Users can export details for tax or cost accounting purposes. Transparency does not mean explaining after the fact, but calculating beforehand.

Verification mechanism for fee disputes

If the user has doubts about a certain financing fee, he can verify it through the following paths:

Click on the fee in the transaction flow to view the snapshot of the benchmark interest rate used and the markup ratio; compare it with the €STR/SOFR and other data published by the central bank's official website on that day to confirm the consistency.

Customer service does not rely on internal system explanations, but guides users to independently verify using public data. The platform also provides a "financing calculator" tool, allowing users to enter the same parameters to manually reproduce the results. Only if it can be reproduced can it be trusted; only if it can be verified can it be fair.

Conclusion: Cost transparency is the cornerstone of fair trade

Overnight financing fees are a necessary part of the CFD mechanism, but their rationality depends on whether they can be understood and verified by users. Wmax chose to open up all interest rate sources, calculation formulas and addition logic, not to simplify decision-making, but to allow users to truly grasp the full-cycle cost structure of positions.

Only when you can accurately estimate the financing expenditure in three days before opening a position can you truly have a complete understanding of the transaction. Because in the professional trading ecosystem, the most basic trust is never "low fees", but "knowable fees".