Purchasing Carbon Offsets
Once you have found a project you want to support, purchasing credits takes a few minutes.
Adding credits to your cart
From a project's Credits tab or the marketplace gallery:
- Choose the vintage year — credits are issued in the year the emission reduction occurred. Older vintage credits (pre-2020) may be cheaper; some frameworks require recent vintages.
- Enter the quantity (whole number of tCO₂e credits)
- Review the line total (quantity × price per credit + platform fee)
- Click Add to Cart
You can add credits from multiple projects to a single order.
Volume discounts
Some projects offer tiered pricing. The discount is applied automatically in the cart when your quantity crosses a threshold:
| Tier | Example |
|---|---|
| Standard | 1–99 credits at list price |
| Tier 2 | 100–499 credits at list price − 5 % |
| Tier 3 | 500+ credits at negotiated price |
For large orders (> 1,000 credits), use Request a Quote on the project page to negotiate directly with the project proponent.
Reviewing your cart
Go to Offset Marketplace → Cart to see all pending items.
| Column | Description |
|---|---|
| Project | Name and standard |
| Vintage | Year of credit issuance |
| Quantity | Credits (tCO₂e) |
| Unit price | USD per tCO₂e |
| Subtotal | Line total |
| Fee | Platform fee (shown separately) |
Adjust quantities or remove items before checkout.
Checkout
- Click Proceed to Checkout
- Review the order summary (all items + fees + total USD)
- Select a payment method:
- Invoice (net-30, net-60) — available for Enterprise plans
- Credit card — Visa, Mastercard, Amex
- ACH / BACS — bank transfer for large orders
- Enter your billing address and purchase order number (optional)
- Confirm that you have read the Terms of Purchase (link opens in sidebar)
- Click Place Order
Order confirmation
After a successful payment you will receive:
- An order confirmation email with line-item receipt
- An entry in Offset Marketplace → Order History showing the order ID, projects, quantities and price paid
- The purchased credits are now in your credit wallet (not yet retired)
Credits in your wallet do not appear on external registries until you explicitly retire them.
Invoice orders
If you selected Invoice, the order moves to Pending Payment status. Credits are reserved for 30 days. Once your finance team completes the bank transfer, status moves to Confirmed and credits move to your wallet.
Supported currencies
Prices are displayed in USD. If your organisation's billing currency is different, conversion is applied at the checkout exchange rate, with the rate shown on the order confirmation.