https://suntowersystems.com/do-you-support-summary-billing-we-have-several-large-accounts-that-only-pay-bills-once-a-month-and-prefer-to-pay-from-a-single-invoice/ Publishers of SAFE: Simple Accounting for Forms Experts Tue, 13 Dec 2011 19:36:57 +0000 hourly 1 https://wordpress.org/?v=7.0