NFL prediction market promos give new users up to $305 in bonuses for Week 8. The Polymarket promo code ACTION and Kalshi promo code ACTION55 lead the board, so trade on both before Sunday's 1 p.m. ET games.
The rest of Week 8 starts Sunday, Nov. 1, with two big games kicking off at 1 p.m. ET. Ravens at Bills is on CBS, and Vikings at Lions is on FOX.
Find more on both in our NFL hub and the rest of the Week 8 odds page.
I break down five offers below, then share live prices and a prediction for both 1 p.m. ET games. The table lines up each offer by code, bonus, and the trade that earns it.
| NFL Prediction Market | NFL Week 8 Offer | Sign-Up Code |
|---|---|---|
| Polymarket | Deposit $10, Get $25 Trading Bonus | ACTION |
| Kalshi | Trade $25, Get $55 Bonus | ACTION55 |
| Novig | Deposit $10, Get $50 in Trade Credits | ACTION |
| ProphetX | Trade $50, Get $75 Bonus | TANBONUS |
| FanDuel Predicts | Get $100 in Bonuses When You Trade $1 for 5 Days | Click Here |
Best NFL Prediction Market Promos for Week 8
Each of these NFL prediction market promos fits a different new user. Two require a $10 deposit, two require a larger first trade, and one requires five days of activity.
Read the terms before you sign up and trade Ravens-Bills or Vikings-Lions.
1. Polymarket Promo Code ACTION
This offer turns a $10 deposit into a $25 trading bonus with the Polymarket promo codeACTION. That makes it the cheapest way to start trading Week 8 markets, starting with Sunday's 1 p.m. ET games.
| Polymarket Promo Code | Polymarket Referral Bonus | Polymarket States Available |
|---|---|---|
| Polymarket Promo Code ACTION | Deposit $10, Get $25 Trading Bonus | AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY |
2. Kalshi Promo Code ACTION55
Kalshi promo code ACTION55 pays a $55 bonus after a $25 trade. The app lists every Week 8 game, and it prices Detroit at 63¢ to beat Minnesota on Sunday, even though the Vikings are 6-0.
| Kalshi Promo Code | Kalshi Sign-Up Bonus | Kalshi States Available |
|---|---|---|
| Kalshi Promo Code ACTION55 | Trade $25, Get $55 Bonus | AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY |
3. Novig Promo Code ACTION
Novig gives the biggest return on a small deposit of the five offers. A $10 deposit with Novig promo codeACTION brings $50 in trade credits, a 5-to-1 payoff.
| Novig Promo Code | Novig Sign-Up Bonus | Novig States Available |
|---|---|---|
| Novig Promo Code ACTION | Deposit $10, Get $50 in Trade Credits | AK, AR, FL, GA, HI, IL, IN, IA, KS, KY, ME, MA, MN, MO, NE, NH, NC, ND, OH, OK, OR, SC, SD, TX, VT, VA, DC, WI, WY |
4. ProphetX Promo Code TANBONUS
Sign up with ProphetX promo codeTANBONUS to get a $75 bonus on a $50 trade. It asks for the largest first trade of the five, so size your position before you commit.
| ProphetX Promo Code | ProphetX Welcome Offer | ProphetX States Available |
|---|---|---|
| ProphetX Promo Code TANBONUS | Trade $50, Get $75 Bonus | AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WV, WI, WY |
5. FanDuel Predicts Promo
FanDuel Predicts has the biggest bonus on the board at $100. You earn it by trading $1 for five days. Sign up through our FanDuel Predicts link, and check the terms for how the app counts those five days.
| FanDuel Predicts Promo | FanDuel Predicts Sign-Up Bonus | FanDuel Predicts States Available |
|---|---|---|
| FanDuel Predicts Promo (Click Here) | Get $100 in Bonus When You Trade $1 for 5 Days | AK, AL, CA, DE, FL, GA, HI, ID, MN, ND, NE, NM, OK, RI, SC, SD, TX, UT |
How to Claim NFL Prediction Market Promos
All five offers follow the same path. Here's the order I'd use on any of them:
- Pick a platform and tap its verified link.
- Enter the promo code during registration (FanDuel Predicts has no code).
- Verify your identity and make the qualifying deposit: $10 on Polymarket or Novig.
- Open an NFL market, choose Yes or No, and place your trade. Kalshi requires $25 in trades, ProphetX requires $50, and FanDuel Predicts requires $1 a day for five days.
- Finish the qualifying deposit or trade to earn the bonus.
Compare the best prediction market apps before you add funds.
Ravens vs. Bills Prediction and Odds
Baltimore (4-3) visits Buffalo (5-1) at 1 p.m. ET on CBS. The Bills come off a bye after a 33-30 win at Las Vegas. The Ravens lost 35-13 to Cincinnati last Sunday.
Lamar Jackson has missed three games with an ankle injury and was listed as questionable earlier this week. Tyler Huntley threw for 298 yards in the loss to the Bengals.
| Platform | Moneyline | Spread | Total |
|---|---|---|---|
| Kalshi | Bills 62¢ | Ravens 39¢ | Bills -3.5: 47¢ | Over 54.5: 49¢ |
| Polymarket | Bills 61.8¢ | Ravens 38.5¢ | Bills -3.5: 46.5¢ | Over 54.5: 49¢ |
I like the over because neither defense has held up lately. Baltimore gave up 35 points last week, and Buffalo gave up 30 in its last game. Baltimore games are 5-2 to the over, and Buffalo games are 5-1.
The total ladder leaves room for fireworks, too. Kalshi prices over 58.5 points at 38¢. My Ravens vs. Bills prediction: Over 54.5 total points.
Vikings vs. Lions Prediction and Odds
Minnesota (6-0) is the league's last unbeaten team, but Detroit (4-2) is the favorite at Ford Field. The Lions are 3-0 at home and beat Green Bay 20-17 last week, with Jared Goff throwing for 303 yards and two touchdowns.
Kyler Murray threw for just 150 yards in Minnesota's 16-10 win over Indianapolis. The Vikings' offense is leaning hard on their defense.
| Platform | Moneyline | Spread | Total |
|---|---|---|---|
| Kalshi | Lions 63¢ | Vikings 38¢ | Lions -3.5: 48¢ | Over 46.5: 47¢ |
| Polymarket | Lions 62.7¢ | Vikings 37.5¢ | Lions -3.5: 47.5¢ | Over 46.5: 48¢ |
A Lions win by four or more sits near a coin flip on both apps. Detroit's Kalshi price has climbed six points in a week.
The risk is real, since the Lions are 1-4-1 against the spread. I'm still laying the points at home.
My Vikings vs. Lions prediction: Lions -3.5.
If you like my Ravens vs. Bills prediction and Vikings vs. Lions predictions, sign up with the NFL prediction market promos above and trade both games.
