Synder

Synder is a San Francisco-based accounting automation platform designed for e-commerce businesses, SaaS companies, and accountants that manage clients with multi-channel online sales. Founded in 2019, Synder builds software that automatically imports and reconciles transactions from payment processors and e-commerce platforms—including Shopify, Stripe, PayPal, Square, Amazon, Etsy, and WooCommerce—into accounting systems like QuickBooks Online, QuickBooks Desktop, and Xero, eliminating the manual data entry that consumes accountants' time when managing clients with high transaction volumes. The platform handles multi-currency transactions, fee deductions, refunds, and tax calculations across payment channels, ensuring that the accounting system reflects actual net revenue and expense with the correct categorization.\n\nSynder's reconciliation engine is built to handle the specific complexities of e-commerce accounting that general accounting automation tools struggle with: payouts from Stripe or PayPal are not simple deposits—they are net of fees, may include holdbacks, and represent many underlying transactions spanning multiple days. Synder disaggregates each payout into its constituent transactions, maps each one to the correct income and expense accounts, and creates accurate matching entries in the accounting system. This granularity gives accountants and business owners a true picture of revenue by channel, product, and customer that payout-level accounting cannot provide.\n\nSynder serves direct e-commerce businesses as well as accounting firms and bookkeepers who manage e-commerce clients, with a partner program that allows accounting professionals to manage multiple client accounts from a single portal. The company has grown rapidly with the expansion of multi-channel e-commerce and the increasing complexity of managing transactions across many platforms. Synder competes with A2X, Connex, and native e-commerce accounting integrations, differentiating on platform breadth—supporting more payment and sales channels than most competitors—and its combination of business and accountant-facing workflows.