Aster BTC perpetual
BTCUSDT
As of 2026-09-30 23:44 UTC, BTCUSDT on Aster has a collected rate of +0.0100% over 8h, or +10.95% simple annualised; its collected settlement interval is 8h, with up to 200x leverage. Aster has a lower rate for longs at -5.69%.
Settled rates over the past 30 days
Settled funding for BTCUSDT
The latest 30-day window contains 25 settlements covering 200 known-period hours, with a cumulative rate of +0.1059%. The latest 12 settlements are shown below.
| Settlement time (UTC) | Rate | Rate period |
|---|---|---|
| 2026-09-09 00:00 | +0.0042% | 8h |
| 2026-09-08 16:00 | +0.0100% | 8h |
| 2026-09-08 08:00 | +0.0062% | 8h |
| 2026-09-08 00:00 | +0.0033% | 8h |
| 2026-09-07 16:00 | +0.0016% | 8h |
| 2026-09-07 08:00 | +0.0023% | 8h |
| 2026-09-07 00:00 | +0.0031% | 8h |
| 2026-09-06 16:00 | +0.0022% | 8h |
| 2026-09-06 08:00 | +0.0028% | 8h |
| 2026-09-06 00:00 | -0.0024% | 8h |
| 2026-09-05 16:00 | -0.0020% | 8h |
| 2026-09-05 08:00 | -0.0039% | 8h |
The cumulative rate sums actual settlements with known periods. Positive totals mean net payment by longs and receipt by shorts; negative totals reverse the direction. If notional value changed, multiplying the current position by this total will not reproduce account cash flows. Historical rates do not predict returns.
What does this rate mean for a 10,000 USDT position?
For BTCUSDT, 10,000 USDT of notional × 0.010000% gives 1.0000 USDT over the quoted 8h rate period: longs pay and shorts receive. This is a constant-rate illustration, not a settled bill or a forecast. Use the actual settlement rate and notional at each settlement; leverage is not multiplied again. Trading fees are separate.
How do I select the margin tier for BTCUSDT?
This table selects tiers by position notional in USDT, not by the amount of margin deposited. The first tier starts at 0 and ends at 400 USDT. Above that, tier 2 requires 0.3300% maintenance margin.
Maintenance margin ladder
With deduction · An isolated-margin estimate for linear contracts; excludes closing fees, accrued funding, auto-added margin and other positions.
| Tier | Range | Maintenance rate | Max leverage | Deduction |
|---|---|---|---|---|
| 1 | 0 – 400 quote | 0.2500% | 200.00x | — |
| 2 | 400 – 300000 quote | 0.3300% | 150.00x | 1 |
| 3 | 300000 – 800000 quote | 0.5000% | 100.00x | 512 |
| 4 | 800000 – 3000000 quote | 0.6600% | 75.00x | 1792 |
| 5 | 3000000 – 12000000 quote | 1.0000% | 50.00x | 11992 |
| 6 | 12000000 – 70000000 quote | 2.0000% | 25.00x | 131992 |
| 7 | 70000000 – 100000000 quote | 2.5000% | 20.00x | 481993 |
| 8 | 100000000 – 230000000 quote | 5.0000% | 10.00x | 2981993 |
| 9 | 230000000 – 480000000 quote | 10.0000% | 5.00x | 14481993 |
| 10 | 480000000 – 600000000 quote | 12.5000% | 4.00x | 26481993 |
| 11 | 600000000 – 800000000 quote | 16.6600% | 3.00x | 51441993 |
| 12 | 800000000 – 1200000000 quote | 25.0000% | 2.00x | 118161993 |
| 13 | 1200000000 – 1800000000 quote | 50.0000% | 1.00x | 418161993 |
Contract specification
Quote currency: USDT · Settlement currency: USDT · Settlement interval: 8h. Lot size uses the venue’s original order unit; the calculator takes base-asset quantity.
The same asset elsewhere
| Venue | Contract | Rate period | Annualised |
|---|---|---|---|
| Aster | BTCU | 8h | -5.69% |
| Lighter | BTC | 8h | -3.50% |
| Aster | BTCUSD1 | 8h | +4.16% |
| Bybit | BTCUSDT | 8h | +4.60% |
| OKX | BTC-USDT-SWAP | 8h | +5.75% |
| Binance | BTCU | 8h | +6.24% |
| Binance | BTCUSDC | 8h | +7.82% |
| Binance | BTCUSDT | 8h | +9.27% |
| Bybit | BTCPERP | 8h | +9.84% |
| Gate | BTC_USDT | 8h | +9.96% |
| Aster this page | BTCUSDT | 8h | +10.95% |
| Binance | BTCUSD1 | 8h | +10.95% |
| Bitget | BTCUSDT | 8h | +10.95% |
| Hyperliquid | BTC | 1h | +10.95% |
| OKX | BTC-USD-SWAP | 8h | +10.95% |
Common questions
What is the Aster BTC funding rate?
The latest collected Aster BTC funding rate is +0.0100% per 8h rate period, or +10.95% simple annualised. At this rate longs pay shorts.
How often is funding charged on Aster BTC?
The collected settlement interval is 8h, normally 3 times a day. Venues can change it; confirm the next settlement time on the contract page.
What is the maximum leverage on Aster BTC?
The collected leverage cap for Aster BTC is 200x, with 13 margin tiers shown. The first margin tier, up to 400 USDT, allows 200x; the second allows 150x.
What is the maintenance margin rate on Aster BTC?
The first tier requires 0.2500%, with 13 available tiers. The applicable requirement depends on the position’s tier. This venue applies a deduction: maintenance margin = notional × tier rate − the tier's maintenance amount.
Which venue has the lowest BTC funding cost for longs?
For a long position, Aster currently has the lowest rate at -5.69% annualised; this page's Aster is at +10.95%. Negative funding pays longs. Trading costs are excluded, and the cash-flow direction reverses for shorts.
What has Aster BTC funding paid over the past 30 days?
Settlements over the past 30 days annualise to +4.64% across 25 settlements, 20% of which were negative (shorts paying). That is what already happened, not a forecast.
Observation time and verification
This contract’s funding was observed at 2026-09-30 23:44 UTC; an unsettled quote may still change. A dash denotes missing usable data, not zero. Aster official data source · Funding methodology
History coverage for this contract
25 settlements are available, covering 200 known-period hours, from 2026-09-01 00:00 to 2026-09-09 00:00 UTC. Annualisation uses those covered hours; a full 30-day record is not implied.