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Quick answer: OnlineCheckWriter’s Wave integration connects to your Wave account and imports your invoices and payees list. You can then print, email, or mail checks. Vendor bills may not come across, so import one test first. See the Wave steps.
Updated October 2026
Key Takeaways
Picture a mobile pressure-washing company in Gainesville, Florida, that keeps its books in Wave. This company is made up, but the problem is real. The owner pays a chemical supplier, an equipment lessor, and a subcontractor, and the subcontractor wants a paper check.
Wave tracks the money. The next question is how each check actually goes out.
How Do You Set Up Wave Accounting Integrations With OnlineCheckWriter?
The Wave integration page gives four steps:
- Pick Wave in the integration menu and click Connect.
- Authorize with your existing Wave login.
- On the Invoice List page, click Import Invoice, select Wave, and click Start Importing.
- Click the icon in the Action column, select your bank account, and click Update.
After step 4, you choose print, email, or mail for each check. The full list of connections is on the integration page.
How Should Each Check Go Out?
Pick the delivery that fits who you are paying.
| Who you are paying | Good fit | Why |
|---|---|---|
| Chemical supplier that wants a paper check | Mail it | OnlineCheckWriter mails it to the payee. The Wave page lists mailing at $1.25. Fees and delivery options vary, so confirm the current price at sign-up and allow for mail time. |
| Subcontractor you see in person | Print it | Hand it over. This needs blank check stock and a way to print the number line, explained below. |
| Equipment lessor who takes emailed checks | Email it | The page lists email delivery. Payees may print it, and acceptance varies, so ask first. |
The numbers along the bottom of a check are called the MICR line. The reliable way to print them is a laser printer with magnetic (MICR) toner. Ordinary inkjet ink is not magnetic, so ask your bank before you try it. If you would rather not own that equipment, mailing or email avoids it.
What Do You Do in Wave After a Check Goes Out?
The page describes importing from Wave into OnlineCheckWriter. It does not say Wave marks a sent check as paid, so look at your account after the first one.
In Wave, record each check on the date you issue it, against the bill or expense. Then reconcile it against your bank statement when it clears.
One more thing to know. Wave invoices usually go to customers, not vendors. So test one small import before you rely on it. Here is how the first Friday looks for the Gainesville crew:
- Import, then look for a payee you know. Is your chemical supplier on the list?
- Check whether a vendor bill you owe came across, or only customer invoices.
- Confirm the bank account in the Action column, then create the check.
- Choose print, email, or mail, then record the payment in Wave and reconcile it against your bank statement.
Pay Your Wave Vendors by Check
Create your account, connect Wave, and run one small import to see what comes across before your first check.
For a second Wave example, see how a Charlotte agency prints client and vendor checks.
Wave Check Payments: Quick Answers
Can Wave print and mail checks?
The Wave integration page describes sending your Wave data to OnlineCheckWriter, which prints, emails, or mails the checks. For what your own Wave plan includes, see Wave’s help pages.
What gets imported from Wave?
Invoices and a payees list, per the Wave integration page. Review both before you create checks, and see whether your vendor bills come across.
Do new Wave invoices import automatically?
The steps describe a manual import, so plan to import again when you add new invoices. Check the Wave integration page for current behavior.
Do I have to share my Wave password?
Per the Wave integration page, you authorize the connection with your existing Wave login. Read the permission screen to see what access you are granting before you approve it.
Can I send checks without a printer?
Yes. Email or mail them. Only printing yourself needs blank check stock and MICR toner.
Paying Wave Vendors With Paper Checks?
Pick the bank account, choose print, email, or mail, and keep Wave current with what was paid.
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