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These Payment, Milestone Protection & Refund Terms (the “Payment Terms”) govern all financial transactions on the NeironHub Platform, including milestone funding, the protected milestone payment workflow, payouts, refunds, chargebacks, and payment disputes between Clients and AI Experts. These Payment Terms are Schedule C to, and form part of, the NeironHub Terms of Service (the “ToS”). Capitalized terms not defined here have the meanings given in the ToS.

Platform facilitator. NeironHub operates a technology platform that connects Clients with independent, vetted AI Experts. NeironHub is not a party to the underlying service contract between a Client and an AI Expert and does not provide AI services directly. NeironHub facilitates payment processing and a protected milestone payment workflow. NeironHub does not create a bank escrow account or licensed escrow service.

For payment, billing, invoicing, tax, refund, and chargeback administration, NeironHub may act as merchant of record. This does not make NeironHub the provider of the AI Expert services or a party to the underlying professional service obligations between Client and AI Expert, except as expressly stated in these Terms

1. Fees and Commission

Client fees. NeironHub does not charge Clients any platform fee, subscription fee, or transaction fee. Clients pay only the agreed Project price plus applicable taxes, if any, unless a separate, clearly disclosed service fee applies to a specific NeironHub service (for example, a NeironConsult advisory session).

AI Expert commission. NeironHub deducts the Platform commission disclosed in the accepted proposal, Statement of Work, and applicable payment record from each release to an AI Expert. The disclosed commission covers Platform access, payment processing, the protected milestone payment workflow, project workspace access, dispute support, and Platform support. Standard payment processing fees are included within that commission unless the applicable Project terms expressly state otherwise; Clients are not charged separate processing fees.

Commission is non-refundable once earned, except as expressly provided in Section 5 (Refunds and Cancellations).

Currency. All Platform transactions are denominated and processed in U.S. Dollars (USD). Currency conversion and related fees charged by a User’s bank, card network, or payment processor are the responsibility of that User. NeironHub is not responsible for exchange-rate fluctuations or third-party conversion fees.

2. Payment processing and the protected milestone payment workflow

Payment processor. NeironHub uses Stripe and Stripe Connect to process payments and payouts. By transacting on the Platform, Users agree to the applicable Stripe terms. Payment card data is transmitted directly to Stripe and is not stored on NeironHub servers. NeironHub does not store bank account numbers or payment credentials.

AI Expert onboarding. Before receiving any payout, each AI Expert must complete Stripe Connect onboarding, including identity verification, KYC, tax, and payout-method verification. Stripe Connect onboarding supports payment, KYC, and payout eligibility only; it does not constitute Stripe verification of an AI Expert’s technical skills or professional qualifications. AI Experts must be located in a Stripe-supported country to receive payouts.

2.1 How the milestone workflow operates

• Funding. When a Client accepts a proposal or milestone, the Client funds the applicable amount through the Platform’s payment workflow.
• Authorization, capture, and clearing. Payments may be authorized, captured, processed, held, released, refunded, reversed, or delayed according to the Platform payment workflow, Stripe requirements, payment-method and card-network rules, bank settlement timing, fraud screening, and compliance checks.
• Hold pending acceptance. Funded amounts are held through the payment processor and are not released to the AI Expert until a release condition is met. Funded amounts are not investments, do not earn interest for any User, and are not used by NeironHub for any purpose other than facilitating the underlying Project transaction. Platform balances and funded amounts are not bank deposits, deposit accounts, stored-value accounts, or investment products, and are not insured as such.
• Delivery. The AI Expert uploads the agreed Deliverables through the Platform and marks the milestone as delivered.
• Review and release. Following Client acceptance, auto-acceptance, or dispute resolution, NeironHub instructs the payment processor to release the applicable payout to the AI Expert, less the commission disclosed in the applicable Project and payment records.

Milestone-based Projects. Projects may be divided into multiple milestones, each with its own funding, delivery, review, and release cycle. Funds are released milestone-by-milestone as Deliverables are accepted. If a milestone is disputed, subsequent milestones may proceed or be paused based on the dispute outcome.

Payment status. A Project or milestone may appear as funded, authorized, pending, under review, released, refunded, disputed, reversed, or failed, depending on payment status and Platform records.

3. Milestone review, acceptance, and auto-acceptance

Acceptance criteria. Every Project must include clearly documented acceptance criteria for each milestone, specifying the Deliverables, technical and performance requirements, delivery format, and any testing or validation procedures. Clients must review Deliverables in good faith and may not unreasonably withhold acceptance for minor defects that do not materially affect functionality.

Seven-day review period. The Client has seven (7) calendar days from the delivery timestamp to (a) accept the milestone, (b) request specific changes with detailed feedback, or (c) open a dispute through the resolution center.

Notifications before auto-acceptance. NeironHub will send the Client a notification at delivery and a reminder before the auto-acceptance deadline. It is the Client’s responsibility to maintain accurate contact information and monitor communications; non-receipt due to spam filters or incorrect addresses does not extend the review period.

Auto-acceptance. If the Client takes no action within the seven (7) calendar-day review period, the milestone may auto-accept and the applicable payout may be released to the AI Expert. Auto-acceptance is subject to applicable consumer-protection laws; where auto-acceptance is restricted for Consumer transactions, manual acceptance is required.

4. Payouts to AI experts

Release timing. After Client acceptance, auto-acceptance, or applicable dispute resolution, NeironHub will instruct its payment processor to release the applicable payout to the AI Expert within two (2) business days, excluding U.S. federal holidays, provided all payment clearing, KYC, tax, fraud-screening, sanctions, and compliance checks are satisfied.

Payout calculation. The AI Expert receives the milestone amount less the commission disclosed before funding. The applicable Project and payment records show the gross milestone amount, Platform commission, and net AI Expert payout.

Payout method. Payouts are disbursed through Stripe Connect or another approved payout method made available by NeironHub, as configured in the AI Expert’s Stripe Connect account.

4.1 Conditions that may delay or hold a payout

• Incomplete Stripe Connect onboarding, KYC, identity, or tax documentation;
• Pending payment clearing or a payment-processor review;
• Fraud screening, sanctions screening, or other compliance checks;
• An open dispute or chargeback, in which case the disputed amount may be held or reversed pending resolution;
• Account suspension or investigation under the ToS or the Acceptable Use & AI Policy.

Failed payouts. If a payout fails due to incorrect or closed account information, NeironHub will notify the AI Expert, who must update payout information through Stripe Connect. NeironHub will retry the payout after corrected information is received. Uncollected amounts may be held in the AI Expert’s Platform balance until valid payout information is provided.

5. Refunds and cancellations

Refund eligibility. A Client may request a refund through the resolution center in the following circumstances:

Non-delivery. The AI Expert fails to upload Deliverables by the milestone deadline and does not cure within five (5) business days after written notice through the Platform.

Material non-conformity. Delivered Deliverables materially fail to meet the documented acceptance criteria, the failure is material rather than cosmetic or preference-based, and the AI Expert does not rectify within the agreed correction window (or ten (10) business days if none was specified).

Duplicate or erroneous charges. The Client was charged in error, charged multiple times for the same transaction, or charged an incorrect amount due to Platform or processor error.

Refund deadlines. Refund requests must be filed within seven (7) calendar days of the triggering event (the failed cure period, the failed correction period, or discovery of the erroneous charge), or within any longer period required by applicable consumer-protection law.

Refund processing. NeironHub reviews the request and supporting evidence, notifies both parties, and may request additional information. A determination is generally made within ten (10) business days of receiving complete documentation from both parties.

Refunds are processed to the original payment method where supported by Stripe and applicable payment-network rules. Bank transfer, wire, international wire, or customer-balance refunds may require manual processing, additional bank information, longer timelines, deductions for bank/network fees where lawful, or an alternative refund method.

Full and partial refunds. A full refund returns the entire milestone amount to the Client with no commission retained and no payout to the AI Expert. A partial refund reflects the portion of conforming work accepted; the AI Expert is paid for accepted portions, less the commission disclosed in the applicable Project and payment records, and NeironHub retains commission only on amounts paid to the AI Expert.

Cancellations. If a Client cancels before the AI Expert begins work, a full refund is provided and commission is waived. If a Client cancels after work has commenced, the AI Expert is entitled to reasonable payment for work completed, determined by reference to documented evidence, accepted partial work, milestone progress, and Platform records; if the parties cannot agree, NeironHub may make a Platform-level determination on that basis. If an AI Expert cancels after accepting a Project, the Client receives a full refund, and repeated cancellations may result in suspension or removal from the AI Expert network.

6. Payment disputes

Process. Payment disputes follow the dispute-resolution process in the ToS. Users first attempt good-faith resolution through the resolution center; either party may then escalate to NeironHub with a detailed dispute report and supporting evidence (acceptance criteria, communications, Deliverables, timelines, and other relevant records).

Hold during disputes. When a dispute is escalated, the disputed amount is held and may not be released or withdrawn until the dispute is resolved. If only part of a milestone is disputed, only the disputed amount is held; undisputed portions may be released.

Platform-level determination. NeironHub may issue a Platform-level determination regarding refund, payout, partial refund, partial payout, or continued hold of disputed amounts, generally within ten (10) business days of receiving complete documentation from both parties. A NeironHub determination governs Platform payment handling but does not constitute a legal judgment and does not prevent Users from pursuing legal remedies as provided in the ToS. Nothing in these Payment Terms limits non-waivable consumer-protection rights; where a determination conflicts with such rights, the more favorable consumer standard applies.

7. Chargebacks

Chargeback handling. If a Client disputes a payment directly with a card issuer, bank, or payment processor, NeironHub may pause, reverse, or delay any related payout while the chargeback is pending. Users must cooperate with NeironHub’s reasonable requests for evidence, including Project records, communications, Deliverables, acceptance records, and payment information, and NeironHub may submit that evidence to contest the chargeback.

Outcomes and fees. Chargeback outcomes are determined by the applicable card network, bank, or processor, and NeironHub is not responsible for those third-party decisions. If a chargeback is upheld, the Client receives the refund and the AI Expert does not receive payment; if reversed, funds are released to the AI Expert. Chargeback fees, reversal costs, and related processor or card-network costs may be allocated based on the cause of the chargeback and the responsible party. NeironHub may allocate such costs to the AI Expert where the chargeback arises from non-delivery, material non-conformity, breach of Project terms, or AI Expert misconduct; to the Client where the chargeback is fraudulent, abusive, duplicative, or made in bad faith; or to NeironHub where the chargeback arises from Platform billing error or other circumstances for which NeironHub is responsible. Nothing in this section limits non-waivable consumer rights or payment-card network rules. Clients should use the resolution center rather than initiating chargebacks. Except where prohibited by law, abusive, fraudulent, or bad-faith chargebacks, or repeated failure to use the resolution center before initiating avoidable chargebacks, may result in Account restrictions or suspension.

8. Taxes

Tax configuration. Taxes are calculated or itemized only when configured for the applicable transaction and shown on the Stripe-hosted invoice or Platform payment record. NeironHub does not represent that tax collection is enabled in every jurisdiction.

Transaction taxes. Where applicable law requires NeironHub to collect, report, or remit a transaction tax and the payment workflow is configured accordingly, the applicable amount will be shown before payment or on the related invoice. AI Experts remain responsible for taxes not collected by NeironHub, including registration, collection, and remittance where NeironHub has no obligation.

Income tax reporting. NeironHub or its payment processor may request tax documentation and make tax forms available when required by applicable law. Availability and form type depend on the AI Expert’s location, status, payment activity, and processor rules. Missing or invalid documentation may result in backup withholding or held payouts. AI Experts are solely responsible for reporting and paying their own income, self-employment, and other taxes.

No tax advice. NeironHub does not provide tax, legal, or accounting advice. Users should consult qualified professionals regarding their obligations.

9. NeironConsult payments

Booking and fees. NeironConsult advisory sessions are billed at NeironHub’s published rates and collected at the time of booking. NeironConsult is an informational and advisory service provided directly by NeironHub; it is not a Project between a Client and an AI Expert and does not constitute professional, legal, financial, or technical advice.

Cancellations. Cancellations made more than twenty-four (24) hours before a session receive a full refund. Cancellations within twenty-four (24) hours, or failure to attend, may result in forfeiture of the session fee. NeironConsult fees are otherwise non-refundable except in cases of technical failure attributable to NeironHub.

10. Payment circumvention

Any attempt to move a Project off the Platform to avoid commission, payment workflows, or other Platform safeguards is prohibited. Circumvention includes soliciting or accepting off-Platform payment for Projects originated on NeironHub, splitting Projects to reduce commission, or creating nominal Projects while conducting the actual work off-Platform. Circumvention may result in Account suspension or termination, handling of funded or disputed amounts in accordance with these Payment Terms, recovery of lost commission and damages, and other remedies described in the ToS and the Acceptable Use & AI Policy.

11. Changes and relationship to the ToS

Changes. NeironHub may update these Payment Terms with at least thirty (30) days’ advance notice of material changes. Continued use of the Platform after the effective date constitutes acceptance. Changes do not apply retroactively to Projects already funded or in progress, which remain governed by the Payment Terms in effect at funding.

Order of precedence. These Payment Terms are incorporated into the ToS. In the event of a conflict regarding payment, milestone, refund, chargeback, or payout matters, these Payment Terms govern; all other ToS provisions (including warranty disclaimers, liability limitations, dispute resolution, and arbitration) continue to apply.

12. Contact

For payment, refund, payout, or billing questions, contact support@neironhub.ai (Attn: Payment Operations). Disputes should be raised through the in-Platform resolution center.

NeironHub Inc.

2101 5th Avenue, 4S

New York, NY 10027

USA