Moving from 1С/BAS to HubSpot

Move the sales side from 1С/BAS to HubSpot in stages: companies, contacts and open deals go across while the team keeps selling

Many companies keep clients and orders in 1С/BAS next to the books, and the sales and marketing team wants one CRM. 1С/BAS is on the official prohibited software list, which makes the decision easier. HubSpot keeps contacts, companies, deals and tickets as separate objects, so the sales data from 1С/BAS has a clear place. 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. HubSpot is a CRM, so accounting and tax reporting go to a separate accounting program your accountant chooses. Below: what we carry over, how the move goes and which HubSpot capabilities we rely on.

Request an integration System page: 1С/BAS →System page: HubSpot →

What we move

1С/BAS → HubSpotCounterparties from 1С/BAS — companies with tax code and addresses — become companies in HubSpot; duplicates are merged before the load.
1С/BAS → HubSpotContact people with phones and emails become HubSpot contacts linked to their company.
1С/BAS → HubSpotCustomer orders that are not yet closed become deals in HubSpot, so they are finished there rather than in 1С/BAS.
1С/BAS → HubSpotPayments on those open orders move with them as information, so the manager sees what the client has already paid.
1С/BAS → HubSpotSales history by client for the period you choose is carried over as reference, so the manager sees what the client bought before.

How the move goes

First the HubSpot account administrator creates an access key that works for your account only; we do not use anyone's personal password.
We look at what is really in your 1С/BAS: which catalogues and documents sales use, what is outdated; together we decide what moves to HubSpot and what stays in the archive or goes to the accounting program.
Before the move we clean the data: merge duplicate counterparties, fix phones and names, and mark old records the CRM does not need.
We make a trial load of a small part of the data, and your managers check clients and open orders on familiar examples before the full load.
For the transition both systems run in parallel: new sales go into HubSpot, and 1С/BAS stays at hand as a reference, so the team keeps selling.
We reconcile clients and open orders in HubSpot against 1С/BAS on the same date; every difference is explained before the next step.
Only after that is the sales side of 1С/BAS switched off; the accounting part stays until your accountant moves to their new program, and the old database is kept as an archive.

Automation scenarios

One client, several cards

Before the same client sits in 1С/BAS under several spellings, and managers argue whose client it is.

After duplicates are merged before the move, and in HubSpot the client has one card with the whole history.

Managers wait for the operator

Before to see what a client bought or which of his orders are still open, a manager asks the person who works in 1С/BAS.

After the client, his open sales and his history are in HubSpot, and the manager sees them himself.

Sales and accounting part ways

Before everyone thinks leaving 1С/BAS means the accountant loses their tool.

After sales work in HubSpot, and the accountant moves the books to the program they chose, without waiting for the sales side.

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
A tool built for a single account signs in with a static access token; a tool meant to serve multiple accounts is required to use OAuth.
Source: developers.hubspot.com ↗ checked 2026-09-25
HubSpot's CRM is built around objects — contacts, companies, deals, tickets and others — and every object type has its own numeric ID used in requests.
Source: developers.hubspot.com ↗ checked 2026-09-25
The built-in Workflows builder automates actions — sending an email, updating CRM data, launching another integration — based on an event, a schedule or a condition.
Source: knowledge.hubspot.com ↗ checked 2026-09-25

Limits

The limits come from both systems. HubSpot caps the number of requests per 10 seconds for each connected tool and per day for the whole account, and on the entry plans these caps are the tightest. So a long history is loaded in portions, and we check your plan before the start. The HubSpot 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. HubSpot is a CRM: accounting and tax reporting from 1С/BAS do not move into it and need a separate accounting program chosen with your accountant. 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.

Will sales stop during the move?

No. For the transition both systems run in parallel: new sales go into HubSpot, and 1С/BAS stays as a reference until the reconciliation shows the same figures.

What about accounting?

HubSpot does not keep the books. Sales move to the CRM, and accounting and tax reporting move to a separate accounting program that your accountant chooses; we agree the boundary at the audit.

Can the 1С/BAS database simply be imported into HubSpot?

The HubSpot documentation we rely on does not describe such an import. We export the data from 1С/BAS through its open exchange interface, clean it and load it step by step, checking each part with your people.