CONA

CONA is a narrow tool that does one awkward job properly: turning marketplace payout noise into a DATEV export a tax adviser will accept without argument.

What it does well. E-commerce reconciliation breaks on the edge cases, and CONA is built around them. Marketplace fees, returns, partial settlements, OSS, reverse charge and third-country VAT are handled directly rather than pushed back to the bookkeeper as unmatched lines. The pricing is refreshingly honest for this category: one usage-based price from €19.99 a month, every feature in every tier, no upsells, and a month free to test it against real payouts. Unlimited custom booking rules mean a practice can encode its own treatment for odd cases rather than fighting the defaults, and multi-currency conversion is included.

Where it falls short. The DACH focus is a hard boundary. DATEV is the output format, so a UK or US practice gets little from this, and there is no equivalent export for other regimes. The founders are e-commerce finance practitioners rather than a large engineering organisation, the company is young, and it publishes no customer count, security certification or independent verification of matching accuracy. The stated ambition to grow into a full-stack ERP is a roadmap claim, not shipped capability, and reconciliation coverage depends entirely on which marketplaces and payment providers are connected.

Best for. German-speaking e-commerce and SaaS businesses, and the tax advisers serving them, who are reconciling Shopify or Amazon payouts into DATEV by hand.

Verdict. If your clients sell online in the DACH region, this solves a real and tedious problem at a fair price; outside that region it is irrelevant.