Will the integration work if the accounting software is installed on an office computer?

Usually yes, but with one condition. Cloud-based software can be reached over the internet, whereas software installed on a computer or local server usually needs the vendor's connector or a small intermediary program to pass the data on. That computer or server then has to be switched on while syncing. We check this during the consultation.

Who issues the invoices – the online store or the accounting software?

Either option works; we choose together with your accountant. In the first case, the online store issues the invoice and sends it to the customer straight away, and the integration passes it to the accounting software. In the second, the accounting software creates the invoice and the online store receives its number or PDF. The key is a single invoice numbering sequence with no duplicates.

How often are stock levels and prices updated?

On an agreed schedule – for example, every 15 minutes or every hour – or immediately after a change, if the accounting software allows it. We choose the frequency based on the number of products, how fast they sell and the limits of the software's API. Orders are usually sent to the accounts immediately after payment or fulfilment.

Will the integration produce the i.SAF or SAF-T file?

No, and it usually doesn't need to: the i.SAF and SAF-T files for the Lithuanian tax authority are produced by the accounting software. The integration's job is to make sure every sale reaches your accounts with the correct VAT rates, customer details and invoice numbers. If you don't use accounting software and only the online store issues invoices, a separate data export can be built, after agreeing the requirements with your accountant.

What happens if an order can't be transferred to the accounts?

The integration retries the transfer, and if it still fails, the person responsible gets an email with the reason – for example, "product code not found". Once the error is fixed, the order can be sent again. All transfers are logged, so at the end of the month it's easy to check that every order has reached your accounts.

Can product returns be transferred as well?

Yes. A return marked in the online store can create a credit note in the accounting software and put the product back into stock. We agree exactly how this works with your accountant, as accounting systems handle returns differently.

Will our accountant have to change the way they work?

Very little. Your accountant keeps working in the same accounting software – they just no longer need to enter orders and invoices by hand. Before launch, we agree product codes, VAT rates and document series together, and during the first few weeks your accountant checks that the transferred documents follow their procedures.

Accounting software integration with your online store

Integrating accounting software with an online store means orders, invoices, products and stock levels pass automatically between the store and the accounting system, so your accountant doesn't have to re-key them. Saitai.lt connects WooCommerce, VirtueMart or custom online stores with popular Lithuanian accounting systems and other accounting software. Prices start at €490, with a timeline of 1–4 weeks.

Get a quote How much does it cost?

Prepared by the Saitai.lt team · Updated 6 October 2026

In short

Price: from €490 (ready-made module or configuration); custom API integration quoted after assessment; no VAT is added
Timeline: 1–2 weeks (ready-made module); 2–4 weeks (custom integration)
Accounting software: Lithuanian systems such as Rivilė, B1.lt, Centas, Finvalda, Debetas, Agnum, Stekas and others – as long as the software has an API or an import option
Online stores: WooCommerce, VirtueMart, custom online store (Laravel)
What is transferred: orders, invoices, customers, products, prices, stock levels, payment statuses
Warranty: 12 months
Payment: 50% deposit, balance when the integration goes live
Where we work: remotely, all over Lithuania; meetings in Vilnius by appointment, arranged by phone

Who it’s for

Your accountant enters every online store order into the accounting software by hand or from an exported Excel file.
The stock levels shown in your store don't match those in the accounting software, so you sometimes sell a product you no longer have.
New products and prices appear in the accounting software first, and you then add them to the store separately.
You issue invoices to customers separately from the store, so some of them are late or duplicated.
Orders are growing, and transferring them every week takes up hours of your accountant's or sales manager's time.
You are switching accounting software or online store and want the data exchange to work from day one.

When it’s not the right fit

You get a few orders a week. In that case, importing sales into the accounting software from a file once a month is usually enough.
Your accounting software has neither an API nor a data import option. Then automatic integration isn't possible – it's worth talking to the software vendor first.
You expect the integration to replace your accountant. It transfers data, but VAT returns, i.SAF (the Lithuanian VAT invoice register) and other reports remain your accountant's responsibility.

Accounting software integration diagram: orders and invoices go to the accounting software, products, prices and stock levels go to the online store, codes and rates are mapped, and errors are recorded in a log

Included

What you get

Data exchange specification

Together with you and your accountant, we set out which data moves in which direction and how often, and what happens with returns or cancelled orders.

Orders and invoices – into your accounts

A paid or fulfilled order becomes a sales document in the accounting software, with the customer, products, VAT and a delivery line.

Products, prices and stock – into your store

Prices and stock levels from the accounting software are updated in the online store on a schedule, or after every change if the software allows it.

Mapping codes and rates

We map product codes, VAT rates, warehouses, payment and delivery methods, and the details of private and business customers, so that the documents follow your accountant's procedures.

Error log and notifications

Every transfer is logged. If an order can't be transferred, you get a notification with the reason, and once the error is fixed, the order can be sent again.

Testing with real orders

Before launch, we test the integration with real orders in a test environment or on a copy of your accounting data, and your accountant checks the documents created.

Accountant's guide and a 12-month warranty

We hand over a short guide on what to do when product codes change or an error notification arrives. For 12 months, we fix integration bugs free of charge.

Price

How much does it cost to integrate accounting software with an online store?

Price from

€490

Integrating an online store with accounting software costs from €490 when a ready-made module exists for the software, or the solution only needs configuring. A custom API integration, where you need two-way sync or non-standard rules, costs more – we put the price in our quote once we have checked the software's API.

Prices include all taxes – no VAT is added (we are not VAT-registered). The final price depends on the project: we put it and the timeline in the contract before work starts.

Get an exact price

What the price depends on

Which accounting software and version you use: cloud-based or installed on a computer, and whether it has an API.
Which direction the data travels in: only orders into your accounts, or products, prices and stock levels back as well.
How many products, variants (sizes, colours) and warehouses need mapping.
Which documents need to be produced: invoices, credit notes for returns, pro forma invoices.
How many payment and delivery methods need mapping to your accounting settings.
Whether your existing data needs tidying up before the integration, for example making product codes consistent.

Additional costs

A fee for the accounting software's API, module or extra user licence, if the vendor charges one – paid directly to the vendor.
If the software is installed on an office computer, you may need the vendor's connector or a small intermediary program – we check this before signing the contract.
Integration support after the warranty, and new data flows – under a separate agreement, confirmed in writing.

Timeline

How long does an accounting software integration take?

An integration with a ready-made module takes 1–2 weeks, and a custom API integration 2–4 weeks from receiving the deposit and access to the accounting software. Most of the time usually goes not on coding, but on mapping the data and checking it with your accountant.

Integration scope	Example	Timeline
One-way transfer	orders and invoices from the online store to the accounting software	1–2 weeks
Two-way sync	orders into your accounts; products, prices and stock levels into the online store	2–3 weeks
Custom integration	several warehouses, customer-specific B2B prices, returns, several online stores	3–4 weeks

Process

How it works

Free consultation1–2 working days
We find out which accounting software and version you use, which platform your online store runs on, and which data you want to transfer.
API check and fixed price2–3 working days
We check the software's API documentation or existing modules and, if needed, get test access. The price and timeline go into the contract, and we start once we receive the 50% deposit.
Mapping with your accountant1–3 working days
We agree VAT rates, product codes, document series, warehouses, and payment and delivery methods.
Development or module configuration3–10 working days
We build the data exchange, the sync schedule, the error log and notifications.
Testing with real orders2–5 working days
We transfer test orders, a return and a stock change, and your accountant checks the documents in the accounting software.
Launch and monitoring1–5 working days
We switch the integration on from an agreed date, usually the start of a month, and check the log daily for the first few days.
Warranty and support12 months
For 12 months, we fix integration bugs free of charge. With a support plan, we update the integration whenever the accounting software or online store changes its API.

Comparison

Manual entry, file import or automatic integration?

Criterion	Manual entry	Regular file import	Automatic integration (Saitai.lt)
Upfront cost	€0	often €0, if the software has an import feature	from €490
Staff time	for every order	for every import and for fixing its errors	only reviewing error notifications
How up to date the data is	whenever the accountant enters it	once a day, week or month	immediately after the event, or on a schedule
Stock levels in the online store	corrected by hand	corrected by hand or with a separate import	updated automatically
Risk of errors	high: typing errors, missed orders	medium: format errors and duplicates	low; failed transfers are visible in the log
Best for	a few orders a month	few orders and no need to sync stock	many orders, or when accurate stock levels matter

Examples

Typical projects

Clothing store with product variants

Situation: For example, a WooCommerce clothing store has several hundred products in different sizes and colours. Stock is managed in the accounting software and corrected by hand in the store, so a size that has already sold out sometimes gets sold.
Solution: Each product variant is mapped to a product code in the accounting software. Stock levels in the store are updated on a schedule, and paid orders are transferred to the accounts as sales documents with a delivery line.
Result: Matching stock levels, fewer cancelled orders and sales in the accounts without manual entry.

Pro forma invoices and bank transfer payments

Situation: For example, a plumbing supplies company sells online to installers, and most of them pay by bank transfer against a pro forma invoice. The accountant sees payments in the accounting software, while the sales manager asks every day which orders can be shipped.
Solution: The order is transferred to the accounting software as a pro forma invoice, and once the accountant marks it as paid, the order status in the online store changes to "Paid" on the next scheduled sync.
Result: Pro forma invoices without manual issuing, a clear list of which orders can be shipped and fewer questions for the accounts team.

Product returns

Situation: For example, an online shoe store receives dozens of returns every month. Customers are refunded from the store, while the accountant enters the return documents into the accounting software by hand and checks that the amounts match.
Solution: When a return is marked on the order, a return document linked to the original sales invoice is sent to the accounting software, and the returned product's stock level is updated. We implement this transfer if the accounting software's API supports it.
Result: Returns in the accounts without manual entry, matching amounts and correct stock levels after a return.

Tell us which accounting software you use

Let us know your accounting software, its version and your online store platform. Within 1 working day, we'll tell you how to connect them, how much it would cost and how long it would take.

Get an estimate

FAQ

Frequently asked questions

With popular Lithuanian accounting systems: Rivilė, B1.lt, Centas, Finvalda, Debetas, Agnum, Stekas and others, as long as the software has an API or a data import and export option. Capabilities differ even between versions of the same software, so before signing the contract we check which data your software allows us to read and write.

More

Get an integration quote within 1 working day

Tell us which accounting software and online store you use, and which data you want to transfer automatically. Tel. +370 670 99265.

Phone / WhatsApp / Viber:
+370 670 99265

Email:
info@saitai.lt

We reply within 1 working day. Meetings in Vilnius are by appointment only – please call first.