Start free trial

Know the tax bill before it lands.

For accounting practices on Xero. Rooby forecasts every client's Corporation Tax, VAT and Self Assessment from their books, with the workings behind every figure.

Start free trial with Xero Book a demo

14-day free trial · No card · Read-only access to Xero

For your practice

Every client on your Xero book in one list, the ones with something to act on first. No spreadsheet to keep up.

For their business

Their own bills on their phone: what's coming, when, and how much they've put by. The January phone call becomes an October one.

Every January, a client calls in a panic.

Their tax bill is due. The money isn't there. £8,400 in the bank, £21,690 Corporation Tax due on 1 January: £13,290 short.

With Rooby, that call never comes. Here's why.

Their books, read from Xero every night. Six months in: £48,000 profit from April to September, projected for the rest of the year.

Worked into the one figure that matters.

Example: £21,690 Corporation Tax for Meridian Roofing Ltd, due 1 January 2028.

Corporation Tax · Meridian Roofing Ltd

An example client · due 1 Jan 2028

Worked out again every night as the books change.

See how it's worked out

Every figure shows its workings.

An accountant doesn't trust a number they can't check, so every forecast opens to its calculation, line by line. Pick a bill to see it.

Rooby Admin Clients / Meridian Roofing Ltd

Meridian Roofing Ltd

LtdFlat rate VAT, 9.5%Year end 31 Mar

Synced from Xero at 01:04

Corporation Tax Year to 31 Mar 2027

Profit to dateApr to Sep, from Xero
48,000
Months of dataOctober still settling
6 of 12
Profit for the yearProjected
96,000
At the main rate25%
24,000
Less marginal relief3/200 × (250,000 − 96,000)
(2,310)
Corporation Tax due
£21,690
Due
1 Jan 2028

VAT Sep to Nov 2026

Scheme
Flat rate, 9.5%
Gross turnover receivedSep and Oct, from Xero
28,912
Months of data
2 of 3
Projected for the quarter
43,368
At the flat rate9.5%
4,120
Estimated VAT due
£4,120
Due
7 Jan 2027

VAT Dec 2026 to Feb 2027

Scheme
Flat rate, 9.5%
Gross turnoverProjected from Sep to Nov
40,842
Months of data
0 of 3
At the flat rate9.5%
3,880
Estimated VAT due
£3,880
Due
7 Apr 2027

VAT Jun to Aug 2026

Rooby's estimate
3,540
Payment to HMRCFound in Xero, 6 Oct 2026
3,610
Difference
70 (2%)
Paid
£3,610
Due
7 Oct 2026

  • Every bill, in date order

    Corporation Tax, VAT and Self Assessment for each client, estimated from their books.

  • What changed, and by how much

    Each estimate keeps its history, so a bill that has moved stands out before the client calls.

  • Paid bills found for you

    When a payment to HMRC turns up in Xero, Rooby matches it to the bill and marks it paid.

Sole traders, the same way.

Self Assessment and payments on account, from the profit in Xero, with every line of the calculation shown.

  • Payments to HMRC found in Xero mark the bill paid and replace the estimate.
  • An estimate that still rests on a projection is flagged for you to check.
  • Salary, savings, dividends and rent outside Xero are entered once a year.
  • Cash basis by default, accruals if the client uses them.

Trusted with the books.

“The perfect app to help me track my tax liabilities.

I can't believe I didn't start using Rooby sooner. I recommend it to anyone who doesn't want to be caught short by surprise tax bills ever again!”

Toby Forder · Xero App Store · 3 Aug 2026

  • “Great app that perfectly fills a gap in the market. Easy to set up. Very easy to use.”

    John Allton Jones · 5 Aug 2026

  • “Fantastic app, extremely helpful!”

    Calum Evans · 4 Aug 2026

  • “Extremely helpful and I'd argue essential to any business.”

    Alfie Stone · 3 Aug 2026

  • “I use Rooby to track my tax liabilities for a company that rents out homes, found nothing else similar to it and is really easy to use!”

    Billy Monsey · 3 Aug 2026

5.0 on the Xero App Store, where Rooby was featured in New & Noteworthy.

Rooby is asking Xero forRead only
  • Organisation and tax settingsaccounting.settings.read
  • Profit and lossaccounting.reports.profitandloss.read
  • Balance sheetaccounting.reports.balancesheet.read
  • Trial balanceaccounting.reports.trialbalance.read
  • Invoices and billsaccounting.invoices.read
  • Bank transactionsaccounting.banktransactions.read

Not asked for anything that creates, edits or deletes. No payroll.

Hosted
London: the database and the servers that run Rooby.
Xero tokens
Encrypted twice, with the key kept outside the database.
Rooby staff
Can only open a client's dashboard read-only, and every visit is logged.
ICO
Registered, C1930726. Data Processing Agreement ready to sign.

Priced like a tax band.

Pay per connected client. Crossing a threshold only changes the rate on the clients above it, and every feature is included at every tier.

£10

a client a month for clients 1 to 20

£7

a client a month for clients 21 to 100

£5

a client a month from client 101

Pass it on to your clients

Rooby costs you 20 × £10 + 18 × £7
£326
You recharge 38 × £15
£570
You keep a month
£244

Recharging is up to you: add it to each client's monthly fee, or fold it into an advisory package.

Your brand on their portal.

White label: clients see your firm's name, logo and colours, at your own address. Saved to their phone, it shows your icon, not ours. We set the address up for you.

Every tier includes

  • Corporation Tax and VAT for companies
  • Self Assessment and VAT for sole traders
  • Workings behind every figure
  • A read-only portal for each client
  • Nightly Xero sync
  • Unlimited team members
  • Your branding on the client portal

Before you connect Xero.

Is the figure a filed return?

No. It's Rooby's estimate from the client's books in Xero, with every line of the calculation shown. Bills it finds paid in Xero are marked paid, and for sole traders you can enter the bill from the filed return to replace the estimate.

Does Rooby file anything with HMRC?

No. It doesn't submit VAT returns, CT600s or Self Assessment, and it can't change anything in Xero. It reads the books and shows what's coming.

How accurate are the estimates?

As accurate as the books. Rooby projects the year from the months so far and shows what each figure rests on. A sole trader's estimate that still leans on a projection, with under six months in Xero or profit far from last year's, is flagged for you to check.

Does Rooby need a full year of books?

No. Rooby gives each month a month to settle in Xero (invoices entered, bank reconciled) before counting it, so a year that starts in April gets its first forecast in June. From then on it's worked out again every night. Early figures lean more on the projection, and the workings show how many months each one rests on.

Which taxes does it cover?

Corporation Tax and VAT for limited companies; Self Assessment, payments on account and VAT for sole traders. VAT on the standard, flat rate and cash accounting schemes.

Can I connect clients with my own Xero login?

Yes. If your practice login can see a client's organisation, you can connect it yourself. Rooby asks Xero for the six permissions listed under Security, all of them read only.

What do my clients see?

If you invite them, their own bills: what's due, when, and how much they've put by, in your firm's name and colours. They can't see other clients or change the figures.

How does billing work?

Monthly, per connected client, at the graduated rates above. The first 14 days are free and need no card.

Connect Xero. See the bill.

Your first client's tax forecast, usually in under 30 seconds. 14-day free trial, no card.

Start free trial with Xero Book a 15-minute demo