Aug. 20, 2026
At Ondoku,
For those who fall into this category, we offer a direct bank transfer payment method for annual contracts.
Bank transfers for annual contracts can be easily completed by issuing an invoice or quotation from the Ondoku settings screen.
All Ondoku invoices and receipts are compliant with the invoice system (Qualified Invoice Issuer Registration Number).
Regarding the invoice system, we have completed the registration application for qualified invoice issuers, and we would like to notify you of our registration number.

After confirmation of the transfer, the plan will be activated within 24 hours in principle.
If the username and the remitter's name are different, payment confirmation cannot be performed. Please be sure to let us know via the inquiry form.
Quotations and invoices without payment or contact for more than 3 months will be deleted as expired.
* If you are in a hurry, we can activate the plan even before the funds arrive if you inform us of the approximate payment date.
In that case, please contact us via the inquiry form after issuing the invoice.
Please note that if payment cannot be confirmed 3 days after the notified payment date, the account will be suspended.
* If the desired start date is after the payment date, please notify us by email at least 3 business days in advance. If the contact and payment are out of sequence, we may not be able to accommodate the request.
(Example) Payment made on March 20th → Desired start date is April 1st
Please notify us by email 3 business days before March 20th.
We cannot accommodate the request if notified by email on the day of March 20th.
Subject: Desired start date for annual contract
I am contacting you regarding the desired start date for my Ondoku annual contract.
Invoice Number:
Desired Start Date: [Year/Month/Day]
Scheduled Payment Date: [Year/Month/Day]
* Normally, the plan starts after payment, but by providing the scheduled payment date, it is possible to use the service early from the desired date before payment.
* If the desired start date is after the payment date, please notify us by email at least 3 business days in advance. If the contact and payment are out of sequence, we may not be able to accommodate the request.
[Standard Paid Plan Prices]
Please see here for more details about annual contracts.
This page explains Ondoku payment methods and receipts. Methods for issuing bank transfer invoices and receipts. How to contract a business plan. Issuing receipts for all methods, etc.
[Business Plan Prices]
1-Year Valid License
Per account
Please see here for details on the business plan.
By subscribing to a Business Plan, some usage methods prohibited under "Prohibited Acts" are exempted. We will provide details on what you can do with the Ondoku Business Plan.
The username becomes the addressee on the invoice.
If you have registered the username incorrectly,
You can change the username this way.
Since a quotation is issued simultaneously with the invoice, you can download it very easily if you need a quotation for internal approval processes.
If the username and the remitter's name are different, payment confirmation cannot be performed. Please be sure to let us know via the inquiry form.
Invoices can be easily created with a single button.
Because of this, you may accidentally create unnecessary invoices.
Deleting or canceling invoices cannot be performed by the customer.
If you have accidentally created multiple invoices, please contact us via the inquiry form with a request for deletion.
Quotations and invoices without payment or contact for more than 3 months will be deleted as expired.
If a payment is made while multiple invoices exist and no invoice number is provided, we will activate the invoice for the corresponding plan with the most recent date.
The designated bank for transfers is SBI Sumishin Net Bank.
Other accounts are currently being prepared.
As there is a branch name and account number, you can make transfers from other banks. Of course, transfers between SBI Sumishin Net Bank accounts are also easy.
Accounts other than SBI Sumishin Net Bank are currently in preparation. Please understand this in advance.
After confirmation of the transfer, the plan will be activated within 24 hours in principle.
If the username and the remitter's name are different, payment confirmation cannot be performed. Please be sure to let us know via the inquiry form.
* If you are in a hurry, we can activate the plan if you inform us of the approximate payment date, even before the funds arrive.
In that case, please contact us via the inquiry form after issuing the invoice.
Please note that if payment cannot be confirmed 3 days after the notified payment date, the account will be suspended.
In the annual plan via direct bank transfer, the plan will be displayed as "Free Plan" in the system.
This is because the annual plan lacks a payment ID required by the system, such as those for credit card payments.
Please rest assured that the plan is active once you receive the plan activation email.
Status represents the payment situation after the invoice is issued.
Once the status becomes Paid, the receipt can be downloaded.

After the plan is activated, the status will change to "Paid," and you can download the receipt from the Invoice Issuance History.
All Ondoku invoices and receipts are compliant with the invoice system (Qualified Invoice Issuer Registration Number).
Regarding the invoice system, we have completed the registration application for qualified invoice issuers, and we would like to notify you of our registration number.
Please be aware that there are several points to note regarding payment via bank transfer for Ondoku as we begin operations.
We ask that you carefully consider which plan or business plan you wish to use before subscribing.
Since you can now check quotations, invoices, and receipts all on your own settings screen, it saves you the trouble of making inquiries via email every time.
The direct bank transfer payment method has been well-received by many companies, organizations, and schools.
We have received many email inquiries regarding annual contracts.
However, when it comes to issuing an invoice after an email inquiry, there is inevitably a waiting time for a response.
When working busily every day, this waiting time can be frustrating because you cannot proceed with your work immediately.
"I want to submit this for approval quickly!"
This update allows us to solve such problems.
This represents a significant time saving for those who use Ondoku.
In this way, Ondoku undergoes various updates every day.
We are proud to be the most user-friendly text-to-speech service for you.
Please continue to make great use of Ondoku!
"Ondoku" is an online text-to-speech tool that can be used with no initial costs.
To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.
"Ondoku" is a Text-to-Speech service that anyone can use for free without installation. If you register for free, you can get up to 5000 characters for free each month. Register now for free