Quick updates about credit cards and CS&S accounting (#743)

finance/accounting.md

@@ -56,6 +56,12 @@ See [](accounting-statement-overview.md) for more information about these sheets
 accounting-statement-overview.md
 ```
 
+## CS&S accounting contact
+
+Code for Science and Society has an accounting team that puts together our monthly reports, helps us define annual budgets, and can provide us guidance on accounting questions.
+We also have a dedicated **project accountant** named **Josmil Reyes** that focuses his time on 2i2c.
+If you have any questions for CS&S regarding accounting, send an e-mail to `fsp@codeforsociety.org` and it will be routed to Josmil.
+
 (accounting:dashboard)=
 ## Summary dashboards
 

finance/payments.md

@@ -27,3 +27,11 @@ Ends in `7770`.
 
 Used only for paying cloud providers (GCP, AWS, and Azure) for cloud costs.
 We generally intend to re-imburse ourselves via invoices to communities for any cost charged to this credit card.
+
+### Extending card spending limits
+
+We have a monthly spending limit on each card, and credit card purchases will be declined if we hit it.
+However, we can extend our credit limit on a temporary basis if need be.
+For example, if we expect to make a lot of purchases at once for an event, or if we have made an unusually large purchase that gets us close to our limit.
+
+To extend our card limit, we must send an e-mail to `fsp@codeforsociety.org` and they will raise it for us.