Find Which Price Pays More on the Same Outcome

Neither Kalshi nor DraftKings Sportsbook always pays more. Against a standard -110 sportsbook line, a large Kalshi taker order with the standard fee is better at roughly 50.6 cents or less and worse above that threshold. The exact winner depends on Kalshi’s executable price, rounded fee, order type, quantity, spread, and available depth.

Enter both prices and your Kalshi order details; the calculator identifies the higher net profit at equal risk.

The calculator compares payout, not whether the wager itself is good. A higher return for the same outcome is the better price, but it can still have negative expected value if your estimated probability of winning is too low.

This comparison uses DraftKings to mean DraftKings Sportsbook, not DraftKings Predictions. The supplied evidence does not include first-party DraftKings Sportsbook documentation, so DraftKings calculations here use standard American-odds mathematics and attributed third-party examples.

Compare Net Profit, Not Headline Prices

DraftKings quotes American odds. Kalshi quotes a binary contract price between $0 and $1, then may charge a separate transaction fee. Its order book can also introduce spread and slippage.

At sportsbook odds of -110, a successful $110 wager produces $100 of profit and returns $210 in total. The $210 is not all profit; $110 is the returned stake.

For a Kalshi contract bought at price P and held to settlement, the contract pays $1 if the selected outcome occurs and $0 if it does not. Before fees, a 50-cent contract risks $0.50 to earn $0.50. A 40-cent contract risks $0.40 to earn $0.60. Kalshi describes contract prices as approximate market-implied probabilities, not guarantees or independent forecasts (Kalshi’s explanation of contract prices).

The clean comparison is net profit per dollar of all-in risk:

Offer	Amount risked	Net profit if successful	Raw implied probability
Sportsbook -110	$110	$100	52.38%
Sportsbook +150	$100	$150	40.00%
Kalshi at $0.50 before fees	$0.50	$0.50	50.00%
Kalshi at $0.40 before fees	$0.40	$0.60	40.00%
Kalshi at $0.60 before fees	$0.60	$0.40	60.00%

A sportsbook’s margin is embedded in its quoted odds rather than added as a separate transaction fee at checkout. Kalshi lists a transaction fee, but its spread and order-book depth can add further execution cost. That is why the all-in offer matters more than the platform label.

Sportsbook hold cannot be calculated from one side alone. A two-sided market priced -110 on both outcomes has implied probabilities totaling 104.76%, producing approximately 4.76% overround. The quoted -110 payout already reflects that pricing. Do not subtract another 4.76% from the displayed payout.

Calculate DraftKings Profit From the Displayed Line

For positive American odds +A:

Profit = stake × A ÷ 100

For negative American odds -A, using A as the absolute value:

Profit = stake × 100 ÷ A

Total winning return equals the original stake plus profit. Use the exact line on the bet slip rather than an operator-wide hold estimate.

American-odds implied probability is:

• Negative odds: A ÷ (A + 100)
• Positive odds: 100 ÷ (A + 100)

These are break-even probabilities represented by the offered price. When both sides are available, adding their implied probabilities and subtracting 100% gives the market overround. De-vigging can estimate each side’s normalized market probability, but it does not change the payout the bettor actually receives.

Add Kalshi’s Rounded Fee to the Contract Cost

For C contracts bought at P dollars, the standard taker-fee formula is:

Fee = round upward to the next cent of M × 0.07 × C × P × (1 − P)

M is the applicable market multiplier. Where an eligible maker fee applies, the formula is:

Fee = round upward to the next cent of M × 0.0175 × C × P × (1 − P)

The formulas, rounding rule, examples, and July 7, 2026 effective date appear in the official Kalshi fee schedule. Product-specific provisions apply, so M=1 should not be assumed for every market. A limit order receives maker treatment only when it is eligible and executes.

For a contract that pays $1 when successful:

• All-in cost = C × P + fee
• Settlement proceeds = C
• Net winning profit = C − all-in cost
• Effective decimal odds = C ÷ all-in cost
• All-in break-even probability = all-in cost ÷ C

The official schedule’s standard example charges $1.75 for 100 taker contracts at $0.50:

Item	Amount
Contract cost	$50.00
Transaction fee	$1.75
All-in risk	$51.75
Settlement proceeds if successful	$100.00
Net profit	$48.25
Effective American odds	About -107

The raw 50-cent price corresponds to +100 before fees. After the listed fee, its effective price is approximately -107, which is still slightly better than -110.

Rounding matters more on small orders. For one contract at $0.50, the unrounded taker fee is 1.75 cents and the listed fee is $0.02. All-in cost becomes $0.52, net profit becomes $0.48, and effective odds are approximately -108.

Calculate the fee for the complete order. Multiplying a separately rounded one-contract fee by 100 would incorrectly produce a $2 fee instead of the schedule’s $1.75 example.

Use the Executable Ask and Full Order Depth

An immediate Kalshi buyer should use the executable ask for the selected side—not the bid, midpoint, last trade, or an unfilled limit price.

If an order book shows a 48-cent bid and a 51-cent ask, an immediate buyer starts at 51 cents. The three-cent spread affects the economics even though it is not part of the transaction-fee formula.

Depth can change the effective contract price. If 20 contracts are available at 50 cents and the next 80 are available at 52 cents, the volume-weighted price for 100 contracts is 51.6 cents:

[(20 × $0.50) + (80 × $0.52)] ÷ 100 = $0.516

The calculation must then apply the relevant fee to the intended execution. Using only the best displayed ask would overstate the return.

A resting limit order can request a better price and may receive maker treatment if eligible. Until it executes, however, no position exists. It may fill partially, never fill, or remain open while the sportsbook line changes. Treat its payout as conditional.

An entry-only comparison also assumes the contract will be held to settlement. Selling early exposes the position to the future bid, another spread, and any applicable transaction fee.

Break-Even Kalshi Prices for Common Sportsbook Lines

For a sufficiently large standard taker order with M=1, ignoring cent-level fee rounding, all-in Kalshi cost per contract is:

q = P + 0.07P(1 − P)

Set q equal to the sportsbook line’s implied probability to find the highest approximate Kalshi price that offers at least the same profit-to-risk ratio.

Sportsbook line	Sportsbook break-even probability	Approximate maximum Kalshi taker price
-110	52.38%	50.6 cents
-150	60.00%	58.3 cents
+126	44.25%	42.5 cents

These are screening thresholds, not guaranteed executable prices. Recalculate for actual quantity, upward fee rounding, multiplier, order classification, spread, and depth.

Against -110, 50 cents can beat the sportsbook after the assumed standard taker fee, while 51 cents may not. Against +126, 42 cents can win narrowly, while 43 cents may lose. A one-cent move can reverse the decision.

The Same Market Can Produce Different Winners

A Pittsburgh–Atlanta illustration reported Kalshi prices fetched on August 1, 2026. Its Pittsburgh -150 and Atlanta +126 sportsbook prices were representative DraftKings-shaped numbers, not a documented simultaneous DraftKings capture. The example therefore demonstrates the calculation rather than a current betting opportunity (source comparison).

Scenario	Contract price	Quantity	Stated fee	All-in risk	Net profit	Effective odds	Sportsbook line
Pittsburgh taker	$0.60	100	$1.68	$61.68	$38.32	About -161	-150
Pittsburgh maker, if filled	$0.58	100	$0.43	$58.43	$41.57	About -141	-150
Atlanta taker	$0.42	100	$1.71	$43.71	$56.29	About +129	+126

For Pittsburgh at the 60-cent ask, risking the same $61.68 at -150 would earn approximately $41.12. That exceeds Kalshi’s $38.32 net profit, so the sportsbook price wins.

A Pittsburgh maker order at 58 cents would produce $41.57 of profit on $58.43 of all-in risk, equivalent to about -141. That beats -150 only if the complete order fills at the stated price and fee.

For Atlanta at 42 cents, Kalshi’s effective +129 narrowly beats the representative +126 sportsbook line. Different sides and order types therefore produce different winners in the same event.

Match the Rules Before Comparing Payouts

Two positions are comparable only when they cover the same event, outcome, period, and settlement conditions. Check whether overtime counts, how postponements and cancellations are handled, which data source controls resolution, and whether either position becomes void.

Record both offers at the same time:

Input	DraftKings Sportsbook	Kalshi
Price	Exact American odds	Executable ask
Size	Amount staked	Contracts and depth
Entry cost	Stake	Contract cost plus rounded fee
Winning proceeds	Stake plus profit	Contract settlement proceeds
Net profit	Profit from quoted odds	Proceeds minus all-in cost
Rules	Sportsbook grading terms	Contract settlement terms
Time	Quote timestamp	Same timestamp

For an equal-risk comparison, risk the same all-in amount on each platform and select the higher net profit. For an equal-profit comparison, choose a target profit and calculate how much each venue requires you to risk.

Do not compare a $100 sportsbook stake with 100 Kalshi contracts merely because both use the number 100.

Better Payout Does Not Establish Positive Expected Value

Once equivalent positions are normalized, the one paying more per dollar risked has the better price. Expected value still depends on your estimate of the true probability.

For a binary position:

EV = p × W − (1 − p) × R

Here, p is the estimated win probability, W is net winning profit, and R is the amount lost after failure.

A position risking $50 to earn $55 has a break-even probability of approximately 47.62%. It can pay more than another venue yet remain negative expected value if the true probability is below that threshold.

Market-implied probability is a price signal, not proof of true probability. Short-term results do not settle the question either: a positive-EV position can lose, while a negative-EV position can win. See Expected Value Reveals a Bet’s Long-Run Price for the probability framework.

Kalshi vs DraftKings Odds Questions

Should I Use Kalshi’s Bid, Ask, or Last Price?

Use the current executable ask for an immediate purchase. Check how many contracts are available there and calculate a blended price if the order must cross multiple levels.

The bid is another buyer’s offer. The midpoint may not be executable, and the last trade may no longer be available.

Can an Unfilled Limit Order Beat DraftKings?

Only conditionally. It can show a better potential return if executed, but an unfilled order opens no position and produces no payout. Keep immediate ask comparisons separate from maker scenarios labeled “if filled.”

Does Kalshi Charge Other Fees?

The official schedule effective July 7, 2026 lists no settlement fee, membership fee, or Kalshi fee for ACH deposits or withdrawals. It says card deposits may carry a fee of up to 2%, while banks, processors, or other third parties may impose separate charges. Confirm the current schedule before trading.

Funding costs are separate from an individual contract’s effective odds. Include them only when they are incremental to the transaction being compared.

What Information Is Needed for a Final Verdict?

A defensible live comparison needs the exact sportsbook line, Kalshi’s executable ask, intended quantity, visible depth, rounded fee, market multiplier, order classification, matching rules, and simultaneous timestamps. Without those inputs, no platform-wide claim answers which one pays more.