Invoice-contract online

Q: How does an invoice-contract differ from an ordinary invoice?

An ordinary invoice contains only the details and the amount. An invoice-contract also sets out the essential terms of the deal: the subject matter, the price, and the time and procedure for payment and delivery. That is why it replaces a separate contract.

Q: Is an invoice-contract legally binding?

Yes. An invoice containing the essential terms is an offer (Article 435 of the Civil Code), and paying it is acceptance (Article 438(3)). The written form of the contract is deemed to have been observed.

Q: Is the buyer’s signature needed?

Not necessarily: the contract is concluded at the moment of payment. The document does have a line for the buyer’s signature — in case the parties wish to sign it before payment.

Q: When is an invoice-contract not enough?

For long-term relationships, deferred payment, deliveries in consignments, and complex terms of acceptance and liability. There a full contract is needed, with ordinary invoices issued under it.

An invoice and a contract in one document — for one-off deliveries, when signing a separate contract would take too long. By paying the invoice the buyer accepts the terms.

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Supplier

The party that issues the invoice and receives payment.

INN

Paste the INN — the name, KPP, address and director will be filled in from the state register. Any field can be corrected by hand.

The INN is sent to a counterparty verification service in order to fill in the details from the register.

Name

As in the founding documents: LLC “Vektor”, sole proprietor Ivan Ivanovich Ivanov.

KPP

Organisations only. A sole proprietor has no KPP — leave empty.

OGRN or OGRNIP

13 digits for an organisation, 15 for a sole proprietor.

Address

Phone

BIC

Enter the BIC — the bank name and correspondent account will be filled in automatically.

Bank

Current account

20 digits.

Correspondent account

20 digits, starting with 301.

Buyer

The party that pays the invoice.

INN

Paste the INN — the name, KPP, address and director will be filled in from the state register. Any field can be corrected by hand.

Name

KPP

Address

Invoice

Invoice number

Any format: 15, 15/A, INV-0015.

Date

Valid until

The last day on which the invoice can be paid.

Basis

For example: Supply contract No. 15 of 01.09.2026.

Goods and services

Amount

0.00

Rows can be brought over from Excel or 1C: copy them and paste into the table, or upload an .xlsx or .csv file — up to 100 rows. Column order: Name, Quantity, Unit, Price. With headers the order does not matter. The file is read in your browser and is not sent to the server.

VAT

No VATIncludedOn top

“Included” — the tax is already in the prices. “On top” — prices exclude tax, and VAT is added to the total.

Total

0.00

No tax (VAT)

—

Total payable

0.00 RUB

Ноль рублей 00 копеек

Terms

They will go into the text of the invoice-contract as separate clauses.

Payment period, working days

How many working days the invoice is valid and awaiting payment.

Delivery time, working days

Counted from the payment date.

Delivery method

Additional termsFor example: 12-month warranty, packaging — pallets.

Signatures and layout

Director

Surname and initials — next to the signature space.

Accountant

Payment purpose

It will go into the QR code and the buyer’s payment order. Leave empty — we will compose it ourselves.

Print a payment QR code“Created in Kup2B” caption at the bottom of the invoice

Remember the details in this browser

The details are stored on this device and shared by all tools in the section: save them in the invoice and they are also in the certificate and the QR code. There can be several companies, and any of them can be filled in as either supplier or buyer. On a shared computer others will see the details — in that case switch this off.

The form data is sent to the server only to build the file and is not saved.

How to use it

Paste your INN and BIC, then the buyer’s INN — the details will be filled in from the state register.
Add goods or services and choose the VAT mode.
Enter the payment period and the delivery time and method. Add any special terms in the “Additional terms” field.
Download the PDF and send it to the buyer. Paying the invoice means they agree to the terms.

Frequently asked questions

How does an invoice-contract differ from an ordinary invoice?

Is an invoice-contract legally binding?

Is the buyer’s signature needed?

When is an invoice-contract not enough?

Used together with this

Invoice with a QR code

A PDF in a minute: details by INN and BIC, a payment QR code, the amount in words.

QR code for payment by bank details

An image with a QR code to GOST: the payer scans it in their banking app.

Commercial proposal

A letter with a price table, payment and delivery terms and a validity date.

Request for a commercial proposal

A letter to a supplier: what is needed, in what quantity, when and where.

Company details card

Company details on a single sheet — by INN and BIC.

Payment order

Form 0401060 for paying a counterparty, with details by INN and BIC.

All other tools

All tools

Issue invoices from orders

In Kup2B the buyer places an order in your catalogue at their own price, and an invoice with a QR code is generated from the order — with no manual entry.

A template does not replace a lawyer or an accountant. Check the data before sending: whoever drew up the document is responsible for its content. The document takes effect once signed. Rates and forms checked on 02/10/2026.