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Accounting & ERP Guides, Comparisons, and Tools for Growing Businesses

Still trying to figure out whether QuickBooks, Xero, Zoho, or a full ERP system is the right fit; or whether your current setup just needs to be cleaned up and configured properly? This is where Certum Solutions publishes the guides, comparisons, checklists, and case studies we wish more businesses had before they signed a software contract or hired a bookkeeper. Everything here is written by our own accounting and ERP consulting team for U.S.-based small and mid-sized businesses (roughly $1M–$50M in revenue) evaluating their systems in 2026; not outside contributors guessing at what matters.

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Software Comparisons
Head-to-head breakdowns of QuickBooks, Xero, Zoho, Odoo, and ERP options, built to help you decide, not just compare features.
Free Resource
Free checklists, templates, and calculators you can use today
VIDEO tutorials
Step-by-step walkthroughs recorded inside real QuickBooks, Xero, and ERP accounts.
CASE STUDIES
Real Certum client stories: the problem, the system we implemented, and the result.
Blog
In-depth articles on QuickBooks, Xero, Zoho, ERP, & running the financial side of your business.

Latest from Certum

The newest guides, updates, and breakdowns from our team — covering QuickBooks, Xero, Zoho, ERP, and everything in between.

Video Tutorials Katherine "Katie" Bunschoten Video Tutorials Katherine "Katie" Bunschoten

QuickBooks Online Automatic Invoice Reminder Emails [Video]

Automated Invoice reminder emails are set up differently in QuickBooks Online Plus, QuickBooks Online Advanced, and QuickBooks Desktop. These videos go through the two different avenues to send automated reminders to your customer when their payment is due on the QuickBooks Online platform. I will add another post with the QuickBooks Desktop method soon.

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Training & Webinars Katherine "Katie" Bunschoten Training & Webinars Katherine "Katie" Bunschoten

Data File Fragments and How to Fix Them

As you can imagine, the more fragments you have the more of a maintenance issue you have. The lower the number the better it is. The magic number is under 20, but if you are over this then it isn’t the end of the world. You are just in the yellow zone. The fewer fragments you have the quicker that the file can be read. File fragments in and of themselves are not the problem – you will never have 0 fragments. They are just one of the gauges to measure file health (highest I’ve seen was over 300, and that was a rough one!).

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Video Tutorials Katherine "Katie" Bunschoten Video Tutorials Katherine "Katie" Bunschoten

How to Enter Checks in QuickBooks Online, and When to Use Checks Instead of Enter Expenses

In this quick video I show you how to enter a check in QuickBooks Online (we used Advanced, but it will work for all QuickBooks Online editions). You will also learn when you would want to use the Write Checks function instead of the Enter Expenses function. While you can enter checks using the Expenses screen, I don’t recommend it typically for a few reasons. If these reasons are not important to your business, then using the Expenses screen is sufficient.

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Blog Katherine "Katie" Bunschoten Blog Katherine "Katie" Bunschoten

Things to Consider when Changing Software

As an Accredited Business Consultant, I focus on navigating the ever-changing balance between tech and people. When companies are changing software this differentiation becomes incredibly important to be aware of. My mantra is to let people do people stuff, and let tech do tech stuff. Knowing how to leverage the tools you have available for your business – no kidding – will make you money.

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Blog Katherine "Katie" Bunschoten Blog Katherine "Katie" Bunschoten

What’s Unapplied Cash Payments in QuickBooks Online?

You are running your reports at the end of the month, and come across an odd account on your P&L. Maybe your accountant asked about it, maybe it just stuck out like a sore thumb. Unapplied Cash Payments in QuickBooks are a funny animal. There seems to be a number there, and if you don’t know what it is, it takes way more time than necessary to fix!

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Training & Webinars Katherine "Katie" Bunschoten Training & Webinars Katherine "Katie" Bunschoten

How to Calculate Landed Costs in QuickBooks Enterprise

In a previous post we set up our QuickBooks Enterprise file to calculate Landed Cost, or the cost to get an inventory item to a recipient’s door. Landed cost is important, because it helps you understand the total cost of your items that are shipped, instead of only calculating the cost of creating the item. As any manufacturer or distributor knows, knowing your COGS (Cost of Goods Sold) is a critical need for business planning and pricing. If you need a refresher on how to turn on Landed Cost, please see the previous article below, then carry on with our post.

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Featured Resources

Our most-requested guides, tools, and breakdowns — picked for businesses actively evaluating software, cleaning up their books, or getting ready to scale.

Printable Resources

Free: Starting a New Business Checklist
Q4 Maximize Profits Checklist
Free: AI In Bookkeeping Start Guide
Landed Cost Profit Calculator
Monthly Bookkeeping Checklist
Free: Bookkeeping Year-End Financial Review Checklist

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