Looking for a TaxDome alternative?
TaxDome is a polished, US-built suite that many UK firms use happily. But it's priced in dollars, per user, billed annually upfront on licence terms of one to three years — and it was designed around US tax practice. If that shape doesn't fit your firm, here's a UK-built comparison.
Dollars, seats, and multi-year commitments
TaxDome's pricing starts at $800 per user per year (Essentials), billed annually upfront, with licence terms of one to three years. For a five-person UK firm that's a $4,000+ annual commitment, in a foreign currency, paid before you've run a single job through it.
Sodium bills monthly, in pounds, by client count — free for up to 5 clients, from £25/month (+VAT), with up to 25 users included. There's no annual lock-in to negotiate your way out of if your circumstances change.
Designed for UK practice
TaxDome grew up around the US tax season, and UK firms adapt it to UK work. Sodium starts from the UK side: Companies House is part of the core client record, workflows are built around UK filing rhythms, engagement letters and proposals follow UK conventions, and support runs on UK hours. It's founder-owned — built by Duane Jackson, who previously founded KashFlow and Staffology.
Sodium also includes a built-in MCP server, so AI assistants like Claude can work with your practice data — client queries, task updates, reporting — with your permission.
Where Sodium’s time and billing differs
TaxDome tracks time with rate cards by service and employee and creates invoices from those entries. The difference shows up when the fee you agreed doesn’t match the time you logged.
Sodium records time against clients, tasks, workflow steps and services, with timers that can start and stop with a workflow step, and puts your whole unbilled position on one screen. Bill a fixed fee against the time logged and the shortfall is written off there and then with a reason attached, entry by entry — or left in WIP to bill later. Write-off analysis by reason, recovery rates and open WIP all come off those same entries. Read more about time tracking, WIP and write-offs.
Each person also carries a cost rate alongside their charge rate, so approved hours turn into contractor pay runs and you can see what a job cost next to what it recovered. It’s in the price of every package: no time add-on, and no per-user charge.
What TaxDome does well
TaxDome's client portal — with its award-winning client mobile app — is genuinely class-leading, and the breadth of the suite (documents, signatures, payments, CRM, workflow) means one subscription replaces several tools. Firms that fully commit to it, and whose workflows match its assumptions, get a lot for their money.
Side by side
| TaxDome | Sodium | |
|---|---|---|
| Pricing model | Per user, billed annually upfront — from $800/user/year (Essentials); 1–3 year licence terms | Tiered by client count — up to 25 users included, no per-user charges |
| Currency | Priced in US dollars | Priced in GBP |
| Billing | Annual (or multi-year) commitment paid upfront on most plans | Monthly billing |
| Free tier | — | Free for up to 5 clients |
| Client portal | Included, with mobile app | Client portal included |
| AI assistant access | — | Built-in MCP server — connect Claude and other AI assistants to your practice data |
| Time tracking and WIP | Time tracking with rate cards by service and employee, and invoices created from time entries | Six ways to log time — against clients, tasks, workflow steps and services — including timers that start and stop with a workflow step, calendar and timesheet views, and your whole unbilled position on one screen |
| Fee billing and write-offs | — | Bill a fixed fee against logged time and write off the shortfall with a reason, or leave it in WIP to bill later — with write-off, recovery and open-WIP reporting |
| Staff cost and profitability | — | A cost rate per person alongside their charge rate, contractor pay runs for approved hours, and cost against profit and recovery on the same entries |
Last checked 11 July 2026. TaxDome pricing and features may have changed since — always confirm current details with the vendor. Time and WIP rows describe what each vendor publishes on its own website as at 10 September 2026. A dash means the capability is not stated in the vendor's published material, not that it is unavailable — check with the vendor. A dash (—) means the item wasn't listed on the vendor's public site when we last checked.
Moving your data
Sodium imports clients, contacts, and service assignments from CSV files with the built-in import tools. Export your client list from TaxDome, map the columns, and the core data move typically takes an afternoon. Documents can be brought across into Sodium's document storage as part of onboarding.
Common questions
Does Sodium require an annual contract like TaxDome?
No. Sodium bills monthly in pounds, tiered by client count — free for up to 5 clients, from £25/month (+VAT) for up to 25 clients. TaxDome's plans are billed annually upfront with one-to-three-year licence terms (checked 11 July 2026).
Can I import my TaxDome data into Sodium?
Yes — export your clients from TaxDome as CSV files and use Sodium's import tools for clients, contacts, and service assignments. Documents can be moved into Sodium's document storage during onboarding.
Does Sodium have a client portal like TaxDome?
Yes — every plan includes a client portal with document requests, approvals, client confirmations, and smart forms. TaxDome's portal has a client-facing mobile app, which Sodium doesn't offer today; Sodium's portal is web-based.
Is Sodium built for UK accountants?
Yes — Sodium is built in the UK for UK practice: Companies House is part of the core client record, workflows follow UK filing rhythms, and pricing is in GBP. It's founder-owned, built by Duane Jackson (previously KashFlow and Staffology).
Is there a free trial?
Yes — one month free with no card details required, and the free tier for up to 5 clients has no time limit.
“I've tried other practice management solutions but find they're always heavy work to get them set up - but yours feels a breeze!” — Anne Sievewright, charlesblack.co.uk
Ready to make the switch?
Sodium is free for up to 5 clients, with no card required. Turn off the features you don't need and it fits a practice with 5 clients or 5,000 — import your clients, contacts and services in minutes.