Your digital accountant for SMEs in Zurich
Outsource bookkeeping, payroll, VAT, payments, annual accounts and taxes to your accountant in Zurich on a monthly subscription, so that your evenings are no longer spent on receipts and payment runs.
Fixed price from CHF 290 a month, so that you know in advance what your accounting will cost.
Official bexio partnerPlatinum and implementation partner(opens bexio’s directory of accounting firms in a new window)
Skilled trades
Plumbing, insulation and building services
Trade and e-commerce
Transport and logistics
Cleaning and caretaking
Consulting and services
Home care (Spitex)
Hospitality and entertainmentThe subscription
From the receipts to the tax return: you do not have to do any of it yourself, nor coordinate anything. You hand over your entire finance administration to us, not individual tasks from it.
We post your accounts monthly or quarterly and check your bookkeeping at the end of each month for accuracy and legal compliance.
You photograph or forward your receipts, and our software reads them with AI. We check and correct wherever necessary.
Your accounts are reconciled and documented on an ongoing basis. Discrepancies are noticed by us, not by you.
We record your supplier invoices and prepare the payments. You approve them, nothing more.
Payslips, social insurance, salary certificates (Lohnausweise) and annual declarations. Including hourly wages, collective labour agreements (GAV) and tax at source (Quellensteuer).
We review the entries and prepare the VAT return and the annual turnover reconciliation required by law.
Closing entries such as depreciation and provisions, year-end reconciliation of financial and payroll accounting, annual financial statements under the Swiss Code of Obligations (CO, Obligationenrecht OR) with notes, and draft minutes of the general meeting.
We prepare the tax return of your GmbH or AG in coordination with the annual accounts, so that the two match.
Revenue
Sample company · September 2026
CHF 106,000
Cash
as at 30 September 2026
CHF 64,000
Status of the accounts
as at 30 September 2026
Illustrative reporting view · demo data
The weekend
How it works today
Sorting receipts because there was no time for it during the week. And when it is urgent, Sunday goes as well.
With Onaccounting
Your receipts were photographed and posted long ago. The weekend is yours.
Just before the VAT deadline
How it works today
Searching, calculating, hoping. And if in doubt, a request for an extension that nobody likes writing. Anyone who pays late owes default interest, and the annual turnover reconciliation is due all the same.
With Onaccounting
We file the return before you even think of the deadline. The turnover reconciliation is prepared with the annual accounts, so that it does not turn up as extra work in the summer.
When someone joins
How it works today
Registering with old-age insurance (AHV), the pension fund (BVG) and accident insurance (UVG): the same thing three times in three portals, each with its own login.
With Onaccounting
You tell us the name, the percentage of employment and the start date. You will see the rest on the first payslip.
In January
How it works today
The salary reports to AHV, BVG, UVG and tax at source (Quellensteuer) go through different portals, and it is often unclear which total is required where. An incorrect report comes to light during an audit at the latest, and then with back calculations that become expensive.
With Onaccounting
All reports come from the same payroll accounts we used for the payslips throughout the year. The figures are right because nobody has to piece them together again.
From March to June
How it works today
The annual accounts are due: balance sheet, income statement, notes, appropriation of profit and minutes of the general meeting (GV-Protokoll). And now it becomes clear what was left lying during the year.
With Onaccounting
The annual accounts are the continuation of the year, not a clean-up operation: balance sheet, income statement and notes, including the appropriation of profit and the minutes of the general meeting. They do not cost anything extra either.
What it costs
How it works today
Your time, and at the end of the year an invoice for an amount that nobody predicted. For clean annual accounts, an accountant usually has to rework things anyway, and these corrections often cost more than a subscription.
With Onaccounting
One amount per month that you know in advance. Busier months balance out with quieter ones, and we do not charge extra for them. One-off special cases are charged by time spent, and we tell you the price beforehand. And your evenings are yours again.
Formation
Legal form, commercial register (Handelsregister), VAT registration and a properly set-up bexio, so that your accounting is correct from the first receipt and does not have to be tidied up in the second year.
Growth
The first employees, the first supplier invoices, the first annual accounts under the Swiss Code of Obligations (OR). We take on the ongoing work at a fixed price, so that you do not end up doing the accounts yourself at the weekend.
Established
Beyond a certain size, it is no longer enough for the figures to be correct. They also have to be available in time and be reliable enough to base decisions on, and at some point the audit requirement (Revisionspflicht) comes into play.
Prices
One monthly amount, with all services clearly defined. You can work out your exact amount in 2 minutes with the price calculator.
A small business? Choose and Basic costs CHF 870 a quarter, which is CHF 290 a month.
We post your accounts quarterly, and the amounts are shown per quarter. In addition, there is Basic for small businesses at CHF 870 a quarter.
For small businesses for which posting once a quarter is enough
CHF870/ quarter
equivalent to CHF 290 per month
For small companies with up to 3 employees
fromCHF5901,770/ month/ quarter
equivalent to CHF 590 per month
For established companies with more than 3 employees
fromCHF9902,970/ month/ quarter
equivalent to CHF 990 per month
For larger and more complex mandates
On request
All prices exclude VAT · The exact amount depends on the volume of receipts, the number of employees and the scope of services.
Each service shows what it costs. What it includes is described on the page for that service.
Recurring routine work, for a fixed amount per month, regardless of how much work an individual month involves.
We charge one-off special cases at CHF 120 to 180 per hour, excluding VAT. You know roughly what it will cost beforehand.
The guard rails are on every price card: receipts per month and number of employees. As long as you stay within them, the amount stays the same. Busier months balance out with quieter ones, and we do not charge extra for them. If your business grows beyond them permanently, we tell you and discuss the next tier. We do this beforehand, not on the invoice.
What is not included in the subscription, in detail
Your team
Where technology stops, we start. Software and AI handle the routine, so that it runs quickly and without errors. Every special case, every accrual and every question is assessed by a person on our team.
Melanie GiangCo-founder
Silvio BörlinCo-founder
EmiliaAccounting & Payroll
OkiAI on the team
HarveyChief Happiness OfficerKriesbachstrasse 30, 8600 Dübendorf · Monday to Friday, 9 am to 6 pm
Meet the whole teamClient reviews
Genuine Google reviews
4.9 out of 5 from 26 Google reviews, as of 10 October 2026
Reviews in German, as published on Google.
Platinum and implementation partner
bexio’s highest partner level, which comes with ongoing certification. Listed in the official directory of accounting firms.
Platinum partnerListed in bexio’s directory of accounting firmsRAB505484Licensed audit expertIn the register of the Federal Audit Oversight Authority (RAB)Both entries are public. One click is enough to check them.
How the switch works
It takes around a month from the decision to business as usual. What you need to do for it is manageable.
You give us access to your accounts; in bexio, that is a single tick box. We collect the records from your previous accountant, and we tell you what we find.
We agree the date from which we take over, reconcile the opening balance sheet and clear up the open items. During the year, the end of a quarter is the cleanest break.
Your accounting is up and running. You forward receipts and approve payments; you can see everything else in the software.
A single tick box in bexio is all it takes: you give us accountant access, and we take over without interruption. You carry on working as before. In parallel, we build up your permanent files and gather the records of the last five years, so that you are not left empty-handed if there is an audit.
If you are coming from another system, we set up bexio within a week to the point where you can send your first invoices. We build up the rest afterwards. We also transfer large volumes of data with our own import and automation tools.
You keep your industry software. We synchronise your invoices to bexio and keep the accounts there. For you, bexio becomes a dashboard: you can see where your figures stand at any time without giving up your usual processes.
The initial meeting
The initial meeting is free and without obligation. Together we look at where your business loses time today and which of that work we can take on. Afterwards, you know where you stand.
Who would you like to talk to?
30 minutes, without obligation, by video or at our office in Dübendorf. Both of them hold the initial meeting personally.
Prefer email? info@onaccounting.ch
From the blog
3 min read · Tax
Questions and answers
The accounting subscription starts at CHF 290 per month. At this price, we post your accounts quarterly and charge CHF 870 per quarter. Posted monthly, it starts at CHF 590 and includes bookkeeping, the VAT return, the annual financial statements, the tax return and the software licence. What it will cost for your business depends mainly on the volume of receipts and the number of salary certificates. The price calculator asks for this in five steps and sends you a quote without obligation as a PDF. Work charged by time spent is billed at CHF 120 to 180 per hour, excluding VAT.
No. You keep your ERP or industry software and continue to write your invoices there. For the accounting, we prefer to work in bexio, where we are a Platinum and implementation partner. If you have a different system, we connect to it. And if you do not have one yet, we set it up, charged once according to effort, usually CHF 500 to 1,000.
Digitally: take a photo, forward them or upload them. Our software reads them, and we check and correct them. You do not need to drop off a folder. If you are switching from another accountant, however, you are welcome to bring a box with the old records.
Our office is in Dübendorf, and many of our clients come from Zurich and the Zurich Oberland. However, we can look after you from anywhere in Switzerland, because receipts and reports are handled digitally. With bexio clients, this is the rule anyway: enquiries come from Bern, Basel and St. Gallen just as much as from Zurich.
Two things that can be verified. First, Onaccounting AG is licensed as an audit expert by the Federal Audit Oversight Authority (Revisionsaufsichtsbehörde, RAB), RAB no. 505484. The audit expertise is therefore in-house, but we only audit companies whose accounts we do not keep. If we keep yours, we refer you to an independent auditor (Revisionsstelle). Second, the monthly amount in the subscription is fixed in advance, with the annual financial statements and the tax return included, instead of being topped up according to effort at the end of the year. What does not set us apart is the bexio Platinum status. Several hundred firms in Switzerland hold it, and we do not pretend that it makes us unique.
Yes. During the year, the end of a quarter is the cleanest break, because the VAT return has then been completed, but it is possible at any time. We take over the opening balance sheet, reconcile the open items and collect the records from your previous accountant. For you, the effort remains small.
It takes around a month from the decision to business as usual. First we get access and look at what is there, then we set the cut-off date and reconcile the opening balance sheet. If you already work with bexio, we take over without interruption, and you carry on working as before.
We work for Swiss SMEs from all sectors. We have the most experience where administration gets lost in day-to-day business: owner-managed companies with staff, recurring processes and work that runs over the turn of the year.
That depends on the legal form, the size and your shareholders. An AG or GmbH that is not required to have an ordinary audit can opt out of the limited audit (eingeschränkte Revision) with the consent of all shareholders, provided it has no more than ten full-time positions on annual average (opting out under Art. 727a para. 2 CO). Our audit requirement check (in German) shows in five questions at most whether this is possible for you. If we keep your accounts, we do not audit them ourselves but refer you to an independent auditor.
It takes 30 minutes and is free of charge and without obligation. We look at your situation: volume of receipts, software, employees and what you currently do yourself. Then we tell you what we see, even if the answer is that we are not the right firm for you.
