Most people who try arbitrage betting and stop within the first month do so because of three avoidable mistakes: they start with the wrong tool, they use precise calculator stakes that flag their accounts immediately, or they run out of bookmaker accounts to arb across because they did not open enough at the start. This checklist is designed to prevent all three. Follow it in order before placing your first bet.
Before you do anything else: the account setup window
The most valuable period in your entire arbing career is the time between now and placing your first arb. During this window, you are a new customer at every bookmaker. No profiling has occurred. You have full stake access everywhere. This window will never be this wide again.
Open every licensed bookmaker account in your jurisdiction now. In the US, that means every state-licensed sportsbook accessible in your state: DraftKings, FanDuel, BetMGM, Caesars, PointsBet, BetRivers, ESPN Bet, WynnBET, and any regional operators. In the UK: Bet365, William Hill, Paddy Power, Betfair, Coral, Ladbrokes, Sky Bet, Betway, BetVictor, 888Sport. In Australia: Sportsbet, TAB, Ladbrokes Australia, Neds, PointsBet Australia, Palmerbet.
Fund each account with a modest initial amount — enough to place an arb but not your full bankroll. You will redistribute capital after your first week based on which books produce the most opportunities.
Before your first arb
- Verify sports betting is legal in your jurisdiction
- Open accounts at every licensed bookmaker in your market
- Fund each account with your initial bankroll split equally
- Enable two-factor authentication on every account
- Document your account login details securely
- Verify deposit and withdrawal methods at each book
Tool setup
- Start free trials on 2-3 shortlisted arb tools simultaneously
- Filter each scanner to your actual bookmaker accounts
- Set minimum margin threshold to 1.5% to reduce noise
- Configure stake-rounding settings if available
- Enable email or push notifications for pre-match alerts
- Verify at least 3 opportunities appear per day on your accounts
Your first arb — execution checklist
- Open the scanner alert on your monitor/phone
- Open both sportsbooks in separate tabs or apps simultaneously
- Verify current odds at each book match the scanner display (within 0.05)
- Calculate rounded stakes using the tool calculator (round to nearest $5/$10)
- Place the bet at Book A first, confirm it has settled
- Immediately place the bet at Book B
- Confirm both bets are placed before the window closes
- Record the arb: date, books, sport, market, stakes, gross margin
Ongoing habits
- Place 1 mug bet per week per active soft bookmaker
- Vary stake amounts slightly across consecutive arbs
- Never place the same round number stake at the same book repeatedly
- Log every arb for tax records and performance tracking
- Check for account balance discrepancies weekly
- Review tool subscription value monthly against documented returns
Common beginner mistakes and how to avoid them
Mistake 1: Using precise calculator stakes without rounding
The arbitrage calculator outputs something like $97.43 on one side and $103.57 on the other. New arbers enter these exact numbers. Bookmakers see this pattern immediately. It is the single fastest path to account limiting. Round every stake to the nearest $5 or $10 before placing. The margin reduction is negligible. The profiling signal reduction is significant.
Mistake 2: Starting with too few bookmaker accounts
Opening three accounts and starting immediately is the second most common error. When one of those three accounts gets limited, you lose 33% of your arbing capacity overnight. You now need to open new accounts as a known arber, which is harder. Open every available account before you start and you enter the game with redundancy built in from day one.
Mistake 3: Acting on opportunities after the window has closed
A scanner alert shows a 2.5% arb. By the time you open both sportsbooks, verify the odds, and go to place the bet, one bookmaker has moved their line. The arb is gone, but you place both bets anyway, now booking a loss on one side. This is called "going Dutch" and it is the most expensive beginner error per incident. Always verify current odds match the scanner display before committing either stake. If odds have moved, do not place. Walk away and wait for the next opportunity.
Mistake 4: Not keeping records from day one
Within the first month, you will want to know: which books produce the most opportunities, what your actual average margin is, and whether your subscription is covered by returns. Without a log, you cannot answer any of these questions. A simple spreadsheet with eight columns — date, book A, book B, sport, market, stake, margin, gross profit — provides all the data you need and takes 90 seconds per arb to update.
Your first week: what to expect
In your first week, prioritise learning the workflow over maximising returns. Aim for one to two arbs per day. Take your time verifying odds and placing correctly. Your execution speed will improve quickly after 10–15 completed arbs. Do not rush to scale volume before the process is automatic.
Expect at least one failed execution in your first week where odds move before you complete both bets. This happens to every new arber. The important thing is not to panic — assess whether you have a half-placed trade, decide whether to complete it at the current (non-arb) price or void it if the book allows, and document what happened. One bad execution is a learning event. Multiple bad executions at the same step indicate a process problem to fix.
You're ready — find your tool and start
If you have completed phases 01 and 02 above, you are ready to place your first arb. The best starting tools for new arbers are OddsShopper (free, US) for learning the workflow without cost, or OddsJam / Sharp (paid, US) for full live-scanner access once you are ready to scale.
Use the tool finder for a personalised recommendation based on your country and sport, or browse all 10 reviews for detailed coverage and pricing.