Make a climate contribution using Senken Checkout
Select what best describes your company, and we’ll estimate your annual footprint. If you already know it, enter a custom amount.
After checkout, you’ll receive a shareable contribution certificate via email.
How Senken Checkout works
Make a real climate contribution in a few clicks. We handpick high-quality, independently verified projects, so your money funds real carbon reductions and removals.
Need to offset more than 500 tonnes per year?
FAQ
Senken Checkout is the easiest way to purchase high-quality carbon credits in just a few clicks. Senken typically works with large corporations on carbon credit portfolios, but we believe everyone should have access to the same quality. That is why we built Checkout. Every credit available here has been assessed through our Sustainability Integrity Index (SII), the same rigorous quality framework we use for our corporate clients. Simply estimate your footprint (or enter a custom amount), choose a portfolio, and complete your purchase.
A carbon credit represents one tonne of CO2 that has been reduced or removed from the atmosphere through a verified climate project. However, not all credits are equal. Studies have shown that a significant share of credits on the market do not deliver real climate impact. That is why Senken only offers credits from projects that pass our quality assessment and are certified by independent registries such as Verra, Gold Standard, or Puro.earth.
Senken retires the purchased carbon credits on your behalf as part of our regular retirement cycles. Retirements are processed in batches, and the exact timing depends on the projects involved and their individual issuance timelines. Once retired, the credits are permanently removed from the registry and cannot be resold or reused.
Every project goes through two layers of review. First, it must be certified by an established independent registry, such as Verra (VCS), Gold Standard, or Puro.earth. Second, Senken's Sustainability Integrity Index (SII) analyses over 600 data points per project, covering additionality, permanence risk, baseline methodology, buffer pool adequacy, and co-benefits. Data sources include registry documentation, satellite imagery, third-party ratings such as Sylvera, and on-the-ground monitoring reports. Full methodology is documented on our Sustainability Integrity Index page.
The German portfolio focuses on local Biochar, Enhanced Rock Weathering and Regenerative Agriculture projects with strong co-benefits and shorter supply chains. The International portfolio spreads impact across global Improved Forest Management, Avoided Deforestation, and Biochar projects for the best price-to-impact ratio. Both meet Senken's high-quality standards.
Yes. Both portfolios meet the ICVCM Core Carbon Principles and align with SBTi guidance for Beyond Value Chain Mitigation (BVCM). Both portfolios include a share of long-permanence removals (1,000+ years permanence) and follow the Oxford Principles for Carbon Offsetting, consisting of long-permanence, short-permanence, and high-quality avoidance carbon credits.
We prevent double counting at the project level in multiple ways: 1) by working with projects that are only listed on reputable registries, where you can track all credit retirements; 2) through thorough verification of each project using the Sustainability Integrity Index; and 3) both International and German projects do not count towards Nationally Determined Contributions (NDCs), therefore making them eligible for company- or individual-level contribution claims.
Yes. If you purchase a monthly subscription, you can always pause, adjust, or cancel your monthly contribution from the dashboard you receive after the purchase.
Yes. Select "I'm purchasing as a business" and enter your company name and VAT details. Invoices are issued automatically after payment and are sent out via email.
Costs vary by project type, country, and permanence profile. German projects often have higher running and verification costs, while international projects can be offered at lower prices thanks to scale. Senken charges a service fee on each transaction, covering project sourcing, quality assurance, and platform operations. The remainder goes directly to project developers and registries.
Don't worry, your impact is protected. Senken uses a buffer pool, which works like an insurance system. A small share of credits is kept aside for situations where a project doesn't deliver as expected. If that happens, replacement credits from the buffer pool step in, so the climate impact you've funded stays real and trustworthy.
Yes. Reducing your own emissions should always come first. Carbon credits are usually used for residual emissions that you cannot yet reduce, or as an additional contribution to your reduction measures. Read more about the Mitigation Hierarchy.
Our checkout estimates are based on industry averages to give you a starting point, not a precise calculation. For a detailed personal footprint, we recommend tools like the UBA CO2-Rechner or dedicated carbon accounting service providers. You can then enter your actual figure in the "Custom" tab.