Moving from 1С/BAS to QuickBooks Online

Move the books of your company abroad from 1С/BAS to QuickBooks Online in stages: customers, products and services, open invoices and payments go across

Some owners keep the books of a company abroad in 1С/BAS simply because the Ukrainian side has always used it. 1С/BAS is on the official prohibited software list, and for a company registered in the US, Canada, the UK or Australia QuickBooks Online is a natural next step. One thing first: Intuit's materials list regional versions for Australia, Canada, France, India, the UK and the US and mention no Ukrainian edition, so QuickBooks does not keep the books of a Ukrainian company — this page is about the company whose accounting is kept abroad. We move it in stages: we look at what is really in 1С/BAS, clean out duplicates, make a trial load and let both systems run side by side until the figures match. Below: what we carry over, how the move goes and which QuickBooks capabilities we rely on.

Request an integration System page: 1С/BAS →System page: QuickBooks Online →

What we move

1С/BAS → QuickBooks OnlineCounterparties of the company abroad — companies and individuals with addresses and contact people — become QuickBooks customers; duplicates are merged before the load.
1С/BAS → QuickBooks OnlineThe item catalogue becomes QuickBooks products and services, the same list from which invoice lines are made.
1С/BAS → QuickBooks OnlineCustomer invoices unpaid on the switch-over date move as open invoices, so the customer pays them later in QuickBooks, not in 1С/BAS.
1С/BAS → QuickBooks OnlinePayments already received on those invoices move with them; where one transfer covered several invoices of a customer, it is applied to all of them.
1С/BAS → QuickBooks OnlineSales history for the period you choose is carried over as past invoices for reference, so you see what each customer bought before.

How the move goes

First the owner of the QuickBooks company connects our exchange app and confirms its access once; we do this step together.
We look at what is really in your 1С/BAS: which catalogues and documents belong to the company abroad, what is outdated; together we decide what moves to QuickBooks and what stays in the archive.
Before the move we clean the data: merge duplicate counterparties and items, fix names and addresses, and mark old records the new system does not need.
We make a trial load into an Intuit test company for your country, and your people check customers, items and invoices on familiar examples before anything touches the working company.
For the transition both systems run in parallel: new invoices are made in QuickBooks, and 1С/BAS stays at hand as a reference, so invoicing and payments do not stop.
We reconcile together with your accountant: customers, open invoices and payments in QuickBooks against 1С/BAS on the same date; every difference is explained before the next step.
Only after the reconciliation is 1С/BAS switched off for the company abroad; its database is kept as an archive for audits and old questions.

Automation scenarios

One client, several cards

Before the same customer sits in 1С/BAS under several spellings, and his debt is split between the cards.

After duplicates are merged before the move, and in QuickBooks the customer has one card with all his open invoices.

One transfer, three invoices

Before a customer pays three invoices with one transfer, and after the move nobody knows which of them are closed.

After the payment is applied to all three invoices in QuickBooks, and nothing hangs as unpaid.

Who still owes

Before after a move nobody is sure which invoices were paid before it, and reminders go to customers who have already paid.

After open invoices are moved on one date and reconciled with the accountant, so reminders go only to those who really owe.

How it works technically

For those who want to check: each point links to the official documentation page it comes from.

BAS products are on Ukraine's official list of prohibited software (Cabinet resolution №1335 of 22.10.2025, based on Presidential Decree №601/2024 of 02.09.2024). The direct ban applies to the state sector, critical infrastructure and systems processing state information resources.
Source: impactalaw.com ↗ checked 2026-09-25
According to the same documentation, the platform automatically builds a REST interface using the OData protocol, through which outside systems can read, change, create and delete data over HTTP.
Source: its.bas-soft.eu ↗ checked 2026-09-25
In QuickBooks an invoice is a sales form where the customer pays for a product or service later — exactly what a CRM deal turns into.
Source: developer.intuit.com ↗ checked 2026-09-27
A payment in QuickBooks can be applied to several invoices of one customer at once, so one incoming payment can close several deals in the CRM.
Source: developer.intuit.com ↗ checked 2026-09-27
Items in QuickBooks are the products and services a company buys or sells; they become the lines of an invoice, which is why we build the CRM catalogue on them.
Source: developer.intuit.com ↗ checked 2026-09-27
Intuit's test companies for developers come in regional versions for Australia, Canada, France, India, the UK and the US — the markets QuickBooks Online is built for.
Source: static.developer.intuit.com ↗ checked 2026-09-27

Limits

The limits come from both systems. QuickBooks Online is built for the US, Canada, the UK, Australia and a few other markets; Intuit's materials mention no Ukrainian edition, so we move into it only the books of a company kept abroad, and the Ukrainian side of the business stays with a Ukrainian accounting program. The QuickBooks documentation we rely on does not describe a ready import of a 1С/BAS database, so the data is exported from 1С/BAS through its open exchange interface, prepared and loaded step by step. Intuit limits how many requests one company can receive per minute, so a long history is loaded as a queue rather than instantly. If the connection is not used for 100 days, the owner has to confirm access again. 1С/BAS is on the official prohibited software list: we do not take projects for state bodies, critical infrastructure or systems with state data, and with private businesses we discuss the risk openly.

How to start

Three steps from a first message to work on your project.

01
Leave a request
Describe the task in the form — in text or by voice. Budget and timing are optional.
02
We review and estimate
A developer studies the brief, asks about anything unclear and sends an estimate.
03
We start
Once scope and price are agreed, the work begins.

Leave a request

or write to info@coreviaflow.space

Live project We built and run Gemalli — a B2B export platform with producer pages, a CRM and a deal chat. Read the case →

Questions

Is it legal to stay on 1С/BAS?

1С/BAS is on the official prohibited software list. The direct ban covers the state sector, critical infrastructure and systems with state data. For a private business it is formally allowed but considered a risk — check with your lawyer.

Can QuickBooks keep the books of our Ukrainian company?

No. Intuit's materials list regional versions for Australia, Canada, France, India, the UK and the US and mention no Ukrainian one. This move is for a company whose books are kept abroad; the Ukrainian books go to a Ukrainian accounting program your accountant chooses.

Will work stop during the move?

No. For the transition both systems run in parallel: new invoices go into QuickBooks, and 1С/BAS stays as a reference until the reconciliation shows the same figures. 1С/BAS is switched off only after that.

What happens to the history and the archive?

The history you need every day — what each customer bought, who owes what — moves to QuickBooks. The full 1С/BAS database is kept as an archive, so an old document can still be found for an audit or a dispute.