These Terms & Conditions govern your use of the tk4 platform — including all casino games, sports betting markets, financial transactions, and account services. Please read them carefully before using tk4.
A non-exhaustive summary of the most important obligations and protections in these Terms & Conditions. The full legal text below takes precedence.
You must be at least 18 years of age to register and use tk4. Age verification is required. Accounts held by players under 18 will be permanently closed and all real-money activity voided.
Each individual may hold only one active tk4 account. Duplicate accounts are prohibited. tk4 reserves the right to suspend or merge duplicate accounts and withhold any balances held within them.
All transactions are processed in Bangladesh Taka (৳) via bKash, Nagad, Rocket, and Upay. Minimum deposit is ৳500. Withdrawals are subject to completed KYC verification and applicable bonus wagering requirements.
All bonuses are subject to wagering requirements specified at the time of the offer. Bonuses may not be withdrawn until wagering conditions are met. tk4 reserves the right to modify or withdraw bonuses at any time without prior notice.
Any form of cheating, collusion, use of automated betting software, or exploitation of software vulnerabilities is strictly prohibited. tk4 may void bets, suspend accounts, and withhold funds in confirmed cases of abuse.
tk4 may update these Terms & Conditions at any time. Continued use of the platform following the publication of revised terms constitutes your acceptance of those changes. Check this page regularly for updates.
Welcome to tk4. These Terms & Conditions ("Terms", "Agreement") constitute a legally binding agreement between you ("Player", "User", "you") and tk4 ("we", "us", "our", "the Platform") governing your access to and use of the tk4 website located at https://tk4.bio and all associated services, including but not limited to sports betting markets, casino games, live dealer tables, account management services, and payment processing facilities.
By registering an account, logging in, making a deposit, or otherwise using any part of the tk4 platform, you confirm that you have read, understood, and unconditionally agree to be bound by these Terms in their entirety. If you do not agree to these Terms, you must not use the tk4 platform.
These Terms should be read in conjunction with the tk4 Privacy Policy and the Responsible Gaming Policy, both of which are incorporated by reference into this Agreement.
To register and use tk4, you must satisfy all of the following eligibility requirements at the time of registration and on a continuing basis throughout your use of the platform:
By registering, you represent and warrant that you meet all eligibility requirements listed above. tk4 accepts no liability for losses arising from use of the platform by ineligible persons.
To access real-money features on tk4, you must create a player account by completing the registration process accurately and in full. You are required to provide truthful, current, and complete information, including your legal name, date of birth, contact details, and preferred payment method. Providing false or misleading registration information constitutes a material breach of these Terms.
Each individual is permitted to hold only one active account with tk4 at any time. If tk4 discovers that a player holds multiple accounts — whether under the same identity or different identities — tk4 reserves the right to close all duplicate accounts, forfeit any bonus balances held within them, and withhold pending withdrawals pending investigation.
You are solely responsible for maintaining the confidentiality of your username and password. You must not share your login credentials with any other person. tk4 will not be liable for any loss or damage arising from unauthorised access to your account where you have failed to keep your credentials secure. You must notify tk4 immediately at if you suspect any unauthorised use of your account.
tk4 operates a Know Your Customer (KYC) process in accordance with responsible gaming and anti-money laundering best practices. You may be required to submit identity documents — including a national ID card, passport, or other government-issued identification — before withdrawals are processed. tk4 may place a temporary hold on withdrawals pending satisfactory completion of KYC procedures.
All tk4 accounts are denominated in Bangladesh Taka (৳ / BDT). Deposits and withdrawals are processed exclusively in BDT via supported local payment methods. No foreign currency conversion is provided on the platform.
tk4 accepts deposits and processes withdrawals exclusively via the following local payment methods: bKash, Nagad, Rocket, and Upay. tk4 does not accept deposits via international credit or debit cards, cryptocurrency wallets, or bank wire transfers at this time.
The minimum deposit amount is ৳500 per transaction. tk4 does not charge a deposit fee; however, your mobile financial service provider may apply transaction charges according to their own fee schedule. Players are advised to check their provider's fee terms independently.
Withdrawal requests are subject to the following conditions:
tk4 is committed to preventing money laundering and will not knowingly facilitate transactions that form part of a money laundering scheme. All unusual or suspicious transaction activity will be reviewed, and tk4 reserves the right to withhold funds and report activity to relevant authorities where required.
tk4 may from time to time offer bonuses, free bets, reload promotions, cashback offers, and other promotional incentives to eligible players. All bonus offers are subject to the following general conditions, as well as any specific terms communicated at the time of the promotion:
Players who believe a bonus has been credited incorrectly or who have questions about wagering progress should contact the tk4 support team at .
All sports bets placed on tk4 are subject to these Terms and any sport-specific or market-specific rules published on the platform at the time of bet placement. By placing a bet, you confirm that you have read and agree to the applicable rules for that event and market.
tk4 reserves the right to refuse, limit, or void any bet at its sole discretion, including but not limited to cases where: a bet has been placed after an event has commenced (for non-live markets), the odds displayed were the result of a manifest error, or suspicious betting patterns are detected. A bet is not confirmed until you receive an explicit confirmation notification from the tk4 platform.
Live betting markets are updated in real time. Odds and market availability during live events can change rapidly. tk4 is not responsible for bets placed at incorrect odds due to data feed latency. In-play bets that are confirmed prior to a relevant event outcome (e.g., a cricket wicket, a boundary hit) will stand provided the bet was accepted before the outcome occurred according to our data provider's timestamp.
If a sporting event is abandoned, postponed, or cancelled before the minimum required play is completed (as determined by tk4's event-specific rules), all affected bets will generally be voided and stakes returned to the player's account. Events that are rescheduled and played within 48 hours of the original scheduled start time may, at tk4's discretion, be settled on the rescheduled result.
tk4 applies maximum payout limits per bet and per event. These limits vary by sport and market type and are published within the betting interface. Winnings exceeding the stated maximum payout for a given market will be capped at the maximum payout amount.
Casino games available on tk4 — including slots, live dealer games, table games, and crash games — are supplied by third-party game providers including Pragmatic Play, Evolution Gaming, NetEnt, Microgaming, Spribe, and Ezugi. Each game operates according to its own set of rules, which are accessible via the game interface.
All casino games use certified random number generation (RNG) technology or, in the case of live dealer games, physical game elements streamed in real time. tk4 does not interfere with game outcomes. Return-to-player (RTP) percentages for each game are determined by the respective game provider and are disclosed within the game information panel.
In the event of a technical malfunction or disconnection during a casino game session, tk4 will endeavour to restore the game session to its last known valid state. Where this is not technically possible, the incomplete round will be voided and any stake associated with that round will be returned to the player's account balance. tk4 is not liable for losses arising from technical failures that are outside its reasonable control.
The following activities are strictly prohibited on the tk4 platform. Engaging in any of the following may result in immediate account suspension, forfeiture of balances, and reporting to relevant authorities:
tk4 is committed to promoting safe and responsible gaming practices. The platform offers a range of player protection tools available through your account dashboard, including deposit limits, session time limits, cooling-off periods, and self-exclusion. Players are encouraged to use these tools proactively to manage their gaming activity.
If you believe that your gambling is causing harm to yourself or others, please visit our dedicated Responsible Gaming page for detailed guidance, or contact our support team at to request immediate assistance, including voluntary self-exclusion.
tk4 will not knowingly allow a player who has requested self-exclusion to continue using the platform. Players subject to self-exclusion must not attempt to circumvent this restriction by registering a new account.
The collection, use, storage, and protection of your personal data are governed by the tk4 Privacy Policy, which forms an integral part of this Agreement. By accepting these Terms, you also acknowledge and accept the Privacy Policy.
tk4 collects personal data for the purposes of account administration, identity verification, payment processing, customer support, and regulatory compliance. Your data will not be sold to third parties. Data may be shared with game providers, payment processors, and regulatory bodies strictly to the extent necessary for the above purposes.
To the maximum extent permitted by applicable law, tk4's total liability to you in respect of any claim arising from or in connection with your use of the platform — whether in contract, tort, negligence, or otherwise — shall not exceed the total amount deposited by you in the 30 days preceding the event giving rise to the claim.
tk4 shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to loss of profits, loss of data, loss of goodwill, or business interruption, arising from your use of or inability to use the platform, even if tk4 has been advised of the possibility of such damages.
tk4 does not warrant that the platform will be uninterrupted, error-free, or free from viruses or other harmful components. You are responsible for implementing appropriate security measures on your own devices.
You may close your tk4 account at any time by contacting customer support at . Upon receipt of a closure request, tk4 will process any pending withdrawal of your verified real-money balance, subject to completion of KYC verification and satisfaction of any outstanding wagering requirements. Bonus balances will be forfeited upon account closure.
tk4 reserves the right to suspend or permanently close any player account at any time, with or without prior notice, in the event of: a breach of these Terms; suspected fraud, money laundering, or other illegal activity; failure to complete KYC verification within a reasonable period; or any other circumstance in which tk4 determines, at its sole discretion, that continued provision of services is inappropriate or unlawful.
Upon termination of your account for any reason, all licences granted to you under these Terms cease immediately. Sections of these Terms that by their nature survive termination — including Sections 8, 10, 11, and 13 — shall remain in full force and effect.
These Terms and any dispute or claim arising out of or in connection with them shall be governed by and construed in accordance with applicable law. tk4 operates as an online platform serving players in Bangladesh and endeavours to ensure compliance with all applicable local regulations governing online entertainment services.
Any disputes that cannot be resolved through tk4's internal complaints procedure should first be escalated in writing to . tk4 commits to acknowledging all formal complaints within 5 business days and providing a substantive response within 15 business days of receipt.
Players who remain dissatisfied after exhausting tk4's internal dispute resolution process may seek recourse through other available legal channels under the laws of their jurisdiction.
If you have any questions, concerns, or complaints regarding these Terms & Conditions, please contact the tk4 support team using the details below. All communications must be in English.
Customer Support
Email: — Available 24/7 in English and Bengali.
For responsible gaming concerns, account closure requests, or KYC queries, please include your registered username in your message to help us respond efficiently.
If anything in these Terms is unclear, our support team is available around the clock. You can also explore our FAQ page, review our Responsible Gaming policy, or head directly to the tk4 platform.
18+ only. Please gamble responsibly. These Terms were last updated in January 2026.