Karbon, an accounting practice management solutions provider, has been certified as a Xero App Partner. The announcement comes ahead of an integration between Karbon and Xero Practice Manager, which will be released in April. This integration will automatically synchronize contact data between both systems. Joint Xero and Karbon customers will be able to maintain accuracy across their new and existing client and contact records, without the need for manual updates. … Accounting software provider Xero has launched a payroll integration with South Africa-based payroll solutions provider SimplePay, allowing accountants to eFile employee tax declarations (EMP201s) from Xero to the South African Revenue Service. This builds on Xero’s suite of cloud VAT tax tools in South Africa. … B2B payment solutions provider OnlineCheckWriter.comannounced said that its software is now available on the FreshBooks App Store. It has also partnered with the company to allow FreshBooks customers to import their bills and invoices seamlessly to OnlineCheckWriter.com. … Expense management platform Fyle launched a real-time credit card feed integration for business cards issued on the Mastercard network.