Synerdeck vs TaxCalc
Synerdeck
synerdeck.comTaxCalc
taxcalc.comSide by side
| Figure | Synerdeck | TaxCalc |
|---|---|---|
| Price from | $22.99/mo | £3.50/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Plans published | 3 | 5 |
| Spec score · Client Onboarding Software | 7.4 (#8) | 7.9 (#6) |
| Integrations | The Pro plan includes a Slack integration, while the Scale plan includes webhooks and API access. | Accounts Production imports year-end trial balances from Xero, QuickBooks or FreeAgent and can export journals and adjustments back. |
| Intended users | The About page identifies creative agencies, consultancies, accounting firms, law practices, and professional service businesses as intended users. | TaxCalc says its products serve accountancy practices, in-house finance teams, sole traders and individuals across the UK. |
| Product | Synerdeck is client onboarding software for agencies, consultants, accountants, lawyers, and service teams. | TaxCalc is a UK accounting software platform covering compliance, client management, tax and practice operations. |
| Support | Pro and Scale customers can contact support through the in-app Help Center, and Scale customers get priority support. | The company says every licence includes unlimited UK-based support from accountancy-trained specialists by phone and email, Monday to Friday. |
Plans
TaxCalc
- TaxCalc 2026 Individual 6£42 a year
- Engager Practice Management — up to 5 clients£9 a month
- Self Assessment tax software£42, paid once
- Accounts Production 12£164 a year
- Individual 12£187 a year
In their own words
Synerdeck
Synerdeck is web-based client onboarding software for agencies, consultants, accountants, lawyers and other service teams. Teams can build reusable onboarding flows with a visual editor, sections, requirements and drag-and-drop controls. Clients enter a branded portal through a magic link without creating an account, where they can upload and preview documents and approve them with one click. The product also lists e-signatures, live progress tracking and automated reminders. Its free plan supports up to 10 clients, 2 templates and 500 MB of storage, with manual reminders and a basic client portal. Pro costs $22.99 a month, billed annually, and raises the limits to 100 clients, 25 templates and 25 GB of storage while adding branding, analytics, Slack integration and reports. Scale costs $70.39 a month, billed annually, and adds webhooks and API access, advanced role permissions, audit log export, custom portal domains and priority support. Security measures listed include TLS in transit, encryption at rest by hosting providers and workspace isolation.
TaxCalc
TaxCalc is a UK accounting software platform for tax compliance, client management, and practice operations. Its products prepare personal, partnership, trust, and company tax returns, as well as statutory accounts. For Self Assessment, SimpleStep guides users through relevant sections, with an option to switch to HMRC-style forms. Calculations update in real time, and Check & Finish reviews a return before submission. Tax products submit directly to HMRC, while Accounts Production files statutory accounts to Companies House. Accounts Production can import year-end trial balances from Xero, QuickBooks, or FreeAgent and export journals and adjustments; integrations differ between products. TaxCalc supports self-employment and investment income, but does not include state filing. It runs on Linux, macOS, and Windows, with mobile access limited to the web. Pricing is paid, from £42, with a free trial and no free plan. TaxCalc says each licence includes unlimited weekday phone and email support from UK-based, accountancy-trained specialists.