The ASL is a 501c(3) corporation. All donations are tax deductible in the United States.
The easiest way to donate is to do so when you renew your ASL membership. However, if you would like to donate outside of renewal periods, you can go to the CUP Donations page.
Once here, amounts can be entered and added to your cart. At checkout, the CUP site will ask for your login credentials (Cambridge Core account via ASL Membership) to process the payment. If you have forgotten your login credentials, you can reset them.