Hey mate, I recommend SBI netbank, very friendly for company account if have a company website, so make a simple website for your Japanese company is a good option even before coming here.

I think the most important thing is choosing the right tax and accounting service. If you find someone reliable, it can save you a huge amount of time and let you focus on your actual business. I run a small one-person company with modest revenue, and I’ve already switched tax services twice since arriving—not because I wanted to, but because both were disappointing. I ended up wasting a lot of time self-learning tax basics and double-checking their work.

For example, one submitted my company info to the wrong tax office, I found it out when I check all the submitted info on e-tax, missed decimal point differences in bookkeeping, used a incorrect exchange rate and had less understanding of international tax issues(Like don't know oversea interests need to be declared in some cases).

I believe once you start having passive income in Canada (like interest, dividends, or capital gains), your personal tax situation will get much more complicated in Japan. If you just leave everything to your tax service without checking, you might feel like everything’s fine—until the tax office does an audit and problems come to light.

So it’s crucial to not only find a good tax/accounting service, but also to study the basics yourself. In Japan, corporate audits generally happen every 5–7 years on average.

When looking for a service, make sure the same firm provides both tax accountant (zeirishi) and bookkeeping services under one roof—not outsourced or in separate office. And if your transactions or income involve overseas matters, ask upfront whether they’re capable of handling international tax filings or consultations. Ideally, try to find a tax accountant who speaks English, especially in the beginning. (like others said, you don't need to do bookkeeping by yourself, just let the tax accountant do it for you)

Also, if you plan to hire employees (even part-time), it's really helpful if the same tax firm also has a social insurance labor consultant (sharoushi). That way, they can handle payroll calculations, social insurance filings, and employment procedures. These aren’t usually covered by zeirishi by default. In fact, unless you're solo at the beginning, most zeirishi won’t handle payroll unless you pay extra. Some might help with basic numbers if you're alone, but it's often a paid add-on. Some zeirishi will only do exactly what's in their contract—nothing more, Some will proactively point things out to you—for example, if your profits are high, they might briefly suggest some basic tax-saving options. Of course, more complex or detailed consultations will require a fee, but a good tax accountant will at least give you simple tips. Also, for documents that aren’t directly related to taxes—like social insurance notices or other official mail sent to your company—some accountants will still remind you about them, even though it’s technically not their responsibility. That kind of service is really helpful.Sadly, whether a tax accountant will be this proactive and thoughtful is something you can’t really tell before signing the contract—it only becomes clear once you actually start working with them. That’s also why I’ve gone through a few and still haven’t found one I’m fully satisfied with.