> ## Documentation Index
> Fetch the complete documentation index at: https://docs.inheribase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Fund Your Vault: Credit Cards, Crypto, and Direct Transfer

> Three payment channels to load Vault Credits: card via Polar/Stripe, guided crypto via MoonPay, and zero-fee direct USDC transfer on Base Mainnet.

Inheribase offers three parallel payment channels to accommodate both traditional estate planners and crypto-native users. Each channel deposits Vault Credits to your account immediately upon confirmation — the end result is identical regardless of which method you choose.

<Tabs>
  <Tab title="Card (Polar / Stripe)">
    For users who prefer standard financial instruments, Inheribase integrates with **Polar.sh**, which uses **Stripe** under the hood, to provide institutional-grade fiat merchant processing.

    ### Supported methods

    | Payment method           | Processor | Availability      |
    | ------------------------ | --------- | ----------------- |
    | Visa / Mastercard / Amex | Stripe    | Worldwide         |
    | Apple Pay                | Stripe    | iOS, macOS Safari |
    | Google Pay               | Stripe    | Android, Chrome   |

    ### How it works

    <Steps>
      <Step title="Open credits settings">
        Navigate to **Settings → Credits** in your dashboard.
      </Step>

      <Step title="Enter your amount">
        Enter your desired top-up amount. The minimum for card payments is **\$20.00**.
      </Step>

      <Step title="Choose Pay with Card">
        Select **Pay with Card** to open Polar's secure checkout interface.
      </Step>

      <Step title="Complete checkout">
        Complete the transaction through Polar's payment flow.
      </Step>

      <Step title="Credits applied">
        Vault Credits are deposited to your account instantly upon payment confirmation.
      </Step>
    </Steps>

    <Note>
      Card payments require a \*\*minimum deposit of $20.00** to cover third-party processing overhead. At current rates, even a $20 deposit covers significant long-term storage or over 100 on-chain health checks.
    </Note>

    ### Receipts and invoicing

    Polar automatically handles:

    * **Email receipts** for every transaction
    * **Standardized invoicing** for tax and estate documentation
    * **Merchant transparency** — payments are processed through verified channels with full dispute protection

    For estate attorneys and wealth managers, Polar invoices are accepted as standard business receipts. For customized institutional invoicing, contact [support@inheribase.com](mailto:support@inheribase.com).
  </Tab>

  <Tab title="Guided Crypto (MoonPay)">
    Inheribase leverages **MoonPay Commerce** for a seamless, guided checkout experience for users who want to pay with crypto but prefer a polished web interface rather than a raw on-chain transfer.

    ### Supported assets

    We recommend **USDC on Base** for optimal performance and smart contract integration, but MoonPay supports a range of assets:

    | Asset      | Network          | Efficiency                      |
    | ---------- | ---------------- | ------------------------------- |
    | USDC       | Base Mainnet     | **Optimal** (instant / low fee) |
    | ETH        | Base Mainnet     | High                            |
    | USDC / ETH | Ethereum Mainnet | Standard                        |

    ### How it works

    <Steps>
      <Step title="Open credits settings">
        Navigate to **Settings → Credits** in your dashboard.
      </Step>

      <Step title="Enter your amount">
        Enter your desired top-up amount.
      </Step>

      <Step title="Choose Crypto">
        Select **Crypto** (via MoonPay) to launch the checkout widget.
      </Step>

      <Step title="Complete the MoonPay widget">
        The **MoonPay Checkout Widget** opens. Select your preferred wallet or enter payment details if purchasing crypto directly through MoonPay.
      </Step>

      <Step title="Credits applied automatically">
        Credits are detected and deposited once the transaction confirms via MoonPay's webhook. No manual action required.
      </Step>
    </Steps>
  </Tab>

  <Tab title="Direct Sovereign Transfer (0% fee)">
    For advanced users or those who prefer a purely non-custodial path, Inheribase provides the **Sovereign Path**: send USDC directly to the Inheribase Treasury address, bypassing all middleman fees and third-party interfaces.

    ### Benefits

    * **0% protocol fees** — no provider markups; you pay exactly the cost of credits
    * **Universal compatibility** — works from MetaMask, Coinbase App, Binance, or any wallet or exchange
    * **Permanent availability** — does not depend on a third-party API being online

    ### How it works

    <Steps>
      <Step title="Choose Direct Sovereign Transfer">
        In the Dashboard, select **Direct Sovereign Transfer** (Expert Path).
      </Step>

      <Step title="Transfer USDC">
        Choose your transfer method:

        * **1-Click Transfer** — if you have a browser wallet (MetaMask, Coinbase Wallet, etc.) connected, click the 1-Click button to authorize instantly.
        * **Manual Transfer** — scan the displayed QR code or copy the Treasury Address to send USDC from an exchange (Binance / Coinbase / Kraken).
      </Step>

      <Step title="Submit transaction hash (manual only)">
        If you sent manually, paste your Transaction Hash into the verification field to clear the credits.
      </Step>

      <Step title="Credits applied">
        The Inheribase backend autonomously validates the on-chain transfer and applies credits to your ledger.
      </Step>
    </Steps>

    <Warning>
      Only send USDC on **Base Mainnet (Chain ID: 8453)**. Sending tokens on any unsupported network will result in lost funds that Inheribase cannot recover. Double-check your network selection before confirming any transaction.
    </Warning>
  </Tab>
</Tabs>

## Comparison

| Feature         | Card (Polar)           | Guided (MoonPay)         | Direct (on-chain)    |
| --------------- | ---------------------- | ------------------------ | -------------------- |
| **User type**   | Non-crypto             | Crypto-lite              | Expert / sovereign   |
| **KYC**         | Standard               | Per MoonPay policy       | None (privacy-first) |
| **Fees**        | Third-party processing | MoonPay spread           | 0%                   |
| **Minimum**     | \$20.00                | Varies by asset          | \$5.00               |
| **Trust model** | Custodial (Stripe)     | Semi-custodial (MoonPay) | Non-custodial        |