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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.
Not sure where to start?
Head-to-head breakdowns of QuickBooks, Xero, Zoho, Odoo, and ERP options, built to help you decide, not just compare features.Free checklists, templates, and calculators you can use todayStep-by-step walkthroughs recorded inside real QuickBooks, Xero, and ERP accounts.Real Certum client stories: the problem, the system we implemented, and the result.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.
Why Good Inventory Lists Are Important in QuickBooks Software Point of Sale (The Nellie Series)
To get the most from QuickBooks Software Point of Sale you need to ensure your inventory lists are built with great care and detail.
Nellie & Jonas Add Inventory (The Nellie Series)
There are 3 main ways to add inventory to QB POS. We will touch on each now and get into more detail on how to do so after this section.
Nellie Creates Multiple Items of Measure(The Nellie Series)
Often, Nellie used some of the dry goods from inventory in her cookies. She needed a way to track her dry goods usage to keep her inventory correct. The best thing to do is for her to Create Assembly Items.
Nellie Builds Her First Assembly(The Nellie Series)
Now that Nellie has entered all of her dry good ingredients and the Units of Measure she is ready to Build her Assembly Item. Viola, Nellie’s Chocolate Chip Cookie!
Nellie Creates Group Items (The Nellie Series)
Nellie decides to put all the ingredients together in a fancy basket with a recipe card and sell it as a whole set. QuickBooks Software Point of Sale to the rescue! She can create a Group Item for the baskets and not have to open them to scan each ingredient at the checkout.
Nellie Builds a Style Grid (The Nellie Series)
Once Jonas completed entering his styles in grids he found much more free time to fish and enjoy Nellie’s cookies. He was so glad that he contacted KHB Office to help him put his inventory file to work for him!
FAQ
Frequently Asked Questions
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Guides, comparisons, checklists, video tutorials, and client case studies covering QuickBooks, Xero, Zoho, ERP systems, inventory software, and general accounting topics for small and mid-sized businesses.
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Certum's own accounting and ERP consulting team writes everything here, based on client implementations we've actually done — not generic outside content.
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All three, plus Odoo, Cin7, Katana, and other ERP and inventory platforms. Certum is vendor-neutral, so the content reflects what actually fits different business situations, not one software brand.
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Everything in the resource library — guides, checklists, comparisons, and downloads — is free to read and download, whether or not you're a Certum client.
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New guides and comparisons are added regularly, and existing posts are updated when software pricing, features, or plans change (like the 2026 QuickBooks Online price increase).
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Start with the Software Comparisons category, or book a free consultation and tell us where you're at — we'll point you to the right guide or give you a direct answer.
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Yes. Contact us at help@certumsolutions.com with what you'd like covered.
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Our most-requested guides, tools, and breakdowns — picked for businesses actively evaluating software, cleaning up their books, or getting ready to scale.
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