Context and references.

The real cost of funding on a held BTC perpetual position is charged at three eight-hour settlements a day — 00:00, 08:00 and 16:00 UTC by default. That schedule is a default, not a guarantee: in violent stretches, and when the previous period hit the rate cap, Binance can move a contract onto a 4-hour or even 1-hour interval without a separate announcement, so read the settlement clock on the contract page instead of assuming three charges a day. At +0.01%, a common quiet-market reading, the simple annualized rate works out at 10.95%. At +0.05%, which is already visibly hot, it is 54.75% — paid by longs to shorts at every settlement. Both figures are just the per-period rate multiplied by 3 and by 365: a snapshot extrapolation, not a compounding APY or APR, and not something anyone gets to lock in.

For a $10,000 long position at +0.05% funding, the cost is $5 per settlement, so $15 across a full 24-hour window — three settlements, not four. A 24-hour window only picks up a fourth charge if the open and the close both land exactly on a settlement stamp, which is an edge case rather than the normal outcome, so do not plan around four. Across a 30-day hold that is $450 of accumulated funding before price does anything; at +0.06% the same position pays $18 a day, or $540 over a month. These numbers are the structural reason that high-funding regimes punish trend-chasing.

Readings near +0.10% (109.5% simple annualized) turn up around cycle peaks such as April 2021, but +0.10% is not a ceiling. Binance sets the funding cap per contract: ±0.3% on BTCUSDT and the other majors, ±2% on the rest of the USDT-margined book, so a thin contract can print well above 0.10% without anything being broken. What a sustained +0.10% does mean is that a long hands over 0.3% of notional a day, which on high leverage chews through the margin buffer in weeks rather than months — the kind of pressure that fed straight into the May 2021 flush.

Cash-and-carry takes the opposite side: short the perpetual, hold the spot, collect funding while the price direction cancels out. At a sustained +0.05% the gross simple annualized figure is 54.75%, but gross is the wrong number to plan around. Round-trip fees on both legs come off it — ordinary futures users pay 0.02% maker and 0.05% taker on Binance, with the spot leg on top, and your own fee page is the authority — and so do two risks nobody can price for you: ADL closing the perpetual leg for you, and stablecoin or venue failure. Neither has a published frequency, so this page does not quote a net annualized figure. One more thing the structure depends on: when funding turns negative the flow reverses, shorts pay and longs receive, which means the carry leg starts paying out instead of collecting.

How funding cost accumulates across holding periods.

For a $10,000 long BTC perpetual at a sustained +0.05% funding rate, funding accumulates to roughly $450 over a 30-day hold, $900 over 60 days and $1,350 over 90 days — that is 4.5%, 9% and 13.5% of notional. Those are period costs, and they are worth keeping separate from the annualized number, because the two get mixed up constantly. The simple annualized rate for this tier is a single figure, 0.05% × 3 × 365 = 54.75%, and it stays the same however long you hold; calling 4.5% "the 30-day annualized rate" is two different units in one sentence. The implication for position management lands the same way either way. A thesis that needs 90 days to play out at +0.05% funding gives up 13.5% of notional before price moves at all, so the trade either has to move quickly or has to be sized down for the drag.

Crypto assets are volatile and not suitable for every investor. This page is editorial analysis, not financial advice.