Arroba · The virtual assistant by ErrobaBeta
Everyday tools
for every business
Arroba is a virtual assistant launched by Erroba as a set of free tools that help businesses with their everyday work — no sign-up needed. We're committed to developing them continually to keep pace with what businesses need.
Arroba puts Article (3) of the Erroba Charter into practice. Read the Charter
For HR
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End-of-Service Benefit
The benefit by reason for termination, with every figure explained and the article it comes from.
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Overtime & Leave
Overtime pay, and your annual leave balance and its value.
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Employee Letters
Salary certificate, service certificate and final settlement — ready to print.
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Working Days
Working days between two dates, excluding weekends and public holidays.
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For accounting & finance
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Amount in Words
Any amount written out in words, in riyals and halalas — for cheques, invoices and contracts.
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VAT Calculator
Add VAT to an amount or extract it from a VAT-inclusive total, with the total in words.
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Profit Margin
Selling price from cost, and the difference between margin and markup.
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Depreciation
An asset's depreciation schedule, straight-line or declining balance, year by year.
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Financing Instalments
The monthly instalment, and the real difference between flat and reducing rates.
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VAT Number Check
Check a VAT number's format before you use it on an invoice.
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For your business
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Compliance Calendar
Your statutory deadlines for a full year, added to your phone's calendar with reminders.
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Hijri ⇄ Gregorian
Convert using the Umm al-Qura calendar, find the time between two dates, or the date after a period.
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More tools on the site
Before you use the tools
For guidance only
Arroba's results are estimates to help you understand and plan; they don't replace the official regulations or the relevant authorities. Erroba accepts no liability for any decision or action based on them.
Still in beta
We keep reviewing and improving the tools, and their results may change as regulations are updated. If you spot a mistake, let us know so we can fix it.
Your numbers stay on your device
All calculations run in your browser; we don't send any figure or date you enter to any server, and we don't store it.