Paying by check

Mail to:
Los Alamos National Laboratory
P.O. Box 1663
Treasury, Pension, & Tax, MS P231
Los Alamos, NM 87545

Paying by credit card

Click the payment button below, then on the credit card form, enter a payment description (up to 64 characters with spaces). For miscellaneous payments, use the field to fully describe the payment. (If you wish to provide additional information, send an email to For more information, refer to Credit Card Payments Guide (pdf).