Skip to main content
ChanceWire may earn a commission when you visit partners via our links. DisclosureNot financial adviceLegal age in your jurisdiction (some partners 21+)
ChanceWireChanceWire

Poly Chance: Scan volume first, then open a category. Prices are implied probabilities — not guarantees. Start with the reading guide if this is new.

Tools · Prediction markets

Fee drag estimator

Estimate round-trip fee cost and an optional “effective price after fees” from your ASSUMPTION stake and fee inputs. SoftCta only — verify every fee on the venue.

How to use

  • Enter a stake / notional (ASSUMPTION units).
  • Set entry and exit fees as % or flat — both labeled ASSUMPTION — verify on venue.
  • Optionally add a contract price to see educational effective-price math after entry fee.
AssumptionEvery fee field is a user ASSUMPTION — verify on venue. ChanceWire never claims Polymarket, Kalshi, Novig, or PredictIt fee schedules as baked-in facts. Example defaults below are placeholders only.

Inputs (ASSUMPTION)

Entry feeAssumption — verify on venue

Exit feeAssumption — verify on venue

Round-trip math (from your ASSUMPTIONS)

Entry fee
1
Exit fee
1
Round-trip cost
2 (2.00% of stake)
Net after entry
99
Effective price after fees
0.5556

Effective price illustration: if entry fee reduces capital that buys the same contracts, the breakeven price rises. Always verify real fee schedules, maker/taker rules, and spreads on the venue.

Fee drag FAQ

Are these the real Polymarket or Kalshi fees?
No. Every fee field is labeled ASSUMPTION — verify on venue. ChanceWire does not bake Polymarket, Kalshi, Novig, or PredictIt fee schedules into this tool as fact numbers.
What is “effective price after fees”?
An optional educational illustration: if an entry fee reduces the capital that buys the same contracts, the break-even contract price rises. It is math from your inputs — not a live quote or arb claim.
Why percent and flat modes?
Venues describe costs differently (percent of notional, flat per fill, maker/taker tiers, spreads). Pick the shape that matches what you verified on the operator — then type those ASSUMPTIONS yourself.
Does this invent EPC, CPA, or “best platform” rankings?
No. SoftCta educational math only. No invented rates, EPC, CPA, or best-platform claims. SoftCta /r locks stay unchanged.
Where should I verify real fees?
On each venue’s own fee docs and order ticket. ChanceWire fee guides and /platforms are orientation SoftCta links — always confirm on the operator before trading.