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12Bet Sign Up Offer Guide

  • You get a £5 Free Bet
  • Make a profit of £3.50+
  • Newbies need ~20 minutes

12Bet are becoming a more well-known bookmaker in the UK, and now often sponsor a team in the Premier League. They are owned by the same group who operate 138Bet, Fun88 and TLC Bet. They don’t tend to have loads of offers for existing customers (reload offers), but are still worth while doing a couple of fake mug bets on when you get the chance.

12 Bet Offer Summary

IMPORTANT! Do not bet on horse racing – it’s not included in this offer.

  • Deposit Method: Debit Card
  • Qualifying (Trigger) Bet: £10 – exact stake amount
  • Free (Profit) Bet: £5 (5 day expiry)
  • Minimum Odds: 2.00
  • Expected Profit: £3.50+
  • Full T&Cs: click here

Need help? Don’t forget, if you need help at anytime you can:

Sign Up to 12Bet

If you haven’t already, sign up to Smarkets first here.

Next, follow the link below to get the correct offer from 12Bet

£10 is the minimum deposit required for this offer.

STEP 1: Finding your Qualifying Bet

Video_Guide_IconTo view a video guide example please Join for Free here.

i) Use the Oddsmonkey Oddsmatcher to find a bet quickly (minimum odds of 2.0)

HOT TIP: Remember this offer does not include bets on horse-racing

You can change the odds format on 12 Bet easily via the secondary navigation menu (towards the right-hand side).

To help you find the best Qualifying Bet, and to find it quickly, we recommend to use your Oddsmonkey Oddsmatcher tool. Set the filter so it finds back odds ideally between 2.0 and 2.80.

Not sure what the Oddsmatcher is? Find out more here.

ii) Select a Qualifying Bet and check the odds at 12 Bet and Smarkets

Remember on Smarkets: #BLUE BOXES.

Choose a bet from the Oddsmatcher then check the odds are as expected at 12Bet and Smarkets. (If not hit ‘Refresh’ on the Oddsmatcher to update the list of available bets). 

STEP 2: Calculate the Lay Bet Amount

Video_Guide_IconTo view a video guide example please Join for Free here.

Using the Qualifying Bet Calculator

HOT TIP: Although we normally recommend to bet more if you can, the terms of this offer state the first bet must be exactly £10

You will now need to enter:

  1. Your stake amount at the bookmaker (must be £10)
  2. Your back odds at the bookmaker (must be minimum of 2.0)
  3. The blue box lay odds from Smarkets

The calculator then works out your lay stake amount, which you will use for your against bet at Smarkets.


> Check your Smarkets balance is greater than your calculator liability.

> Reduce the chance of partially-matched bets or un-matched bets by making sure the liquidity (amount under blue lay box) is larger than your lay stake amount.

STEP 3: Placing your bets

Video_Guide_IconTo view a video guide example please Join for Free here.

Place your bet at 12Bet first and check it’s confirmed.

Place your lay bet at Smarkets using the lay stake from your calculator.

STEP 4: Profiting from your Free Bets

Video_Guide_IconTo view a video guide example please Join for Free here.

After your Qualifying Bet has settled, 12 Bet will automatically offer you a Bonus Token of £5. You must click ‘accept’ on this to claim your free bet. (You may then need to log out and log in again for it to appear in your betslip).

The £5 free bet has a 5 day expiry.

HOT TIP: Remember no horse racing

i) Choose a bet to do with higher odds to make a larger profit

We need to use our Oddsmonkey Oddsmatcher now to find bets with higher odds (ideally 4.0 or more) so that we can extract a good profit.

We have created a table for you below to see what amount of liability you will need in Smarkets to obtain certain profit from the £5 free bet.


If you’ve decided not to try Oddsmonkey for  £1 now then you can manually search for bets to do or check our Matched Betting Blog for potential bets to do.

ii) Open the Profit Bet Calculator

Once you’ve found a bet to do enter your £5 free bet stake, with your back odds from 12 Bet and lay odds from Smarkets

Remember to do your important checks (Smarkets balance > liability; Smarkets liquidity > lay stake) before placing your free bet. 

iii) Select to use your free bets in the bet slip

Remember to:

> select your free bet in your betslip at 12Bet

> place the free bet at 12Bet , check it’s gone through and then do your lay bet at Smarkets


That will have hopefully been another quick £3.50+ profit for you.

If any of your bets win at 12Bet we recommend to do a fake mug bet before you withdraw. 

Track your profits in your spreadsheet, and let’s get cracking with the next offer…