Kraken Fee Optimization

Force maker execution by rejecting orders that would immediately fill:

kraken order buy BTCUSD 0.001 --type limit --price 50000 --oflags post -o json 2>/dev/null

If the order would cross the spread and fill as taker, it is rejected instead. This guarantees maker fees on every fill.

Fee Currency Selection

By default, fees are deducted from the received currency. Override with:

kraken order buy BTCUSD 0.001 --type limit --price 50000 --oflags fciq -o json 2>/dev/null

Paying fees in quote currency preserves your base asset balance, useful when accumulating.

Volume-Based Optimization

Higher 30-day volume unlocks lower fees. Track progress:

kraken volume -o json 2>/dev/null

If close to the next tier threshold, consolidating trading activity (rather than splitting across exchanges) can push you into a cheaper bracket.

Futures Fee Schedules

kraken futures feeschedules -o json 2>/dev/null

Futures fee volumes:

kraken futures fee-schedule-volumes -o json 2>/dev/null

Fee-Aware Order Sizing

When buying a fixed dollar amount, account for fees in the volume calculation:

# $100 buy at starter taker rate (0.26%)
# Effective spend: $100 / 1.0026 = $99.74 worth of BTC
# Fee: ~$0.26

For precise accounting, check the fee field in the trade response after execution.

Batch Orders for Fee Efficiency

Batch orders share a single API call, reducing overhead. Use when placing related orders:

kraken order batch orders.json --pair BTCUSD -o json 2>/dev/null

Hard Rules

• Order placement commands are dangerous. Never execute without explicit human approval.
• Always --validate before submitting live orders.
• Post-only orders can be rejected; handle rejection gracefully and retry.