ONESOURCE Determination vs Taxmo

ONESOURCE Determination automates calculations for sales tax, use tax, GST, VAT, and excise tax. The web-based product connects with ERP, financial, billing, e-commerce, point-of-sale, and payment systems through pre-built or custom integrations. It supplies global tax rates, rules, and calculations in real time, with cloud synchronization to support high transaction volumes. Deployment includes a cloud-based indirect-tax engine and an edge-computing option. Determination Anywhere supports business-specific security and data-residency requirements. Tax content covers specialized jurisdictions and industries, with industry offerings for oil and gas, retail, manufacturing, and technology. Configuration features include company structures, global calculations, and tax-return streamlining. Thomson Reuters says its automated calculations and certified processes aim to reduce audit-triggering mistakes; the processes are backed by SSAE 18 and ISAE 3402 certifications. Pricing is on request, and a free demo can be requested.

Taxmo is UK bookkeeping and tax software for sole traders, freelancers, contractors, expats and small businesses. It tracks income and expenses and updates estimates for Income Tax, National Insurance and VAT as entries are added. Paid plans can submit VAT returns to HMRC through the Making Tax Digital API. Taxmo prepares and reviews Self Assessment returns but does not submit them to HMRC; MTD for Income Tax submission is marked as coming soon. Receipt capture extracts supplier, amount, date and VAT from photos and PDFs. Bank imports use read-only, on-demand Open Banking authorization, while CSV statement uploads have no history limit. The accountant platform syncs in both directions with Xero, QuickBooks and FreeAgent, and deadlines can be exported as an iCal feed. Taxmo offers web, iOS and Android apps plus API access; Pro subscribers get a read-only REST API limited to 300 requests per 15-minute window. There is a free plan and a free trial; paid plans start at £9.99/mo, excluding VAT.