Making changes to Dynamics GP while prepping for a future move: Sales tax management

For many small-to-medium-sized businesses operating within a single state or region, sales tax collection and reporting in Dynamics GP may have been relatively simple to manage manually.

As businesses grow, however, sales tax requirements often become much more complex. Expanding into new states, increasing online sales, or generating higher revenue can quickly create new tax obligations. Processes that once felt manageable may suddenly require greater oversight, more accurate reporting, and stronger automation capabilities.

Business Central can help streamline and automate many of these tax processes, but a successful transition starts with understanding how your organization currently manages sales tax. Without a clear understanding of your existing workflows and obligations, moving to a new ERP system can create additional confusion, rather than simplify operations.

If your organization is already evaluating how to manage evolving sales tax requirements within Dynamics GP, now is an ideal time to start preparing for a future transition to Business Central. 

Expanding into new states, increasing sales volume, or making organizational changes can trigger what’s known as sales tax nexus, or the legal requirement that a business collect and remit sales tax in a particular state.

Several common business developments can create new tax obligations and lead to different types of nexuses, including:

• Physical nexus: Your business hires employees, participates in local trade shows, or opens a physical location, such as a store or warehouse, in a state.
• Economic nexus: Your business exceeds a state's sales or transaction threshold for nexus.
• Affiliate nexus: Your business receives referrals from a third-party affiliate located in another state and meets certain revenue thresholds.
• Click-through nexus: A subset of affiliate nexus that applies specifically to digital referrals and is only recognized in some states. 

Every state—and often counties and cities within those states—can have its own tax rates, filing requirements, exemptions, and reporting standards. To make matters more difficult, states typically do not notify businesses when they have reached nexus. Many organizations don't realize they have created a tax obligation until after the fact.

With tax responsibilities across multiple jurisdictions, managing sales tax manually becomes increasingly difficult and time-consuming. Keeping up with changing tax rates, exemption rules, and filing deadlines in spreadsheets can quickly become overwhelming and unsustainable.

That's why modernizing your sales tax processes sooner rather than later can help your team avoid unnecessary stress, compounding manual work, and potential risks to your tax compliance down the road.

If your business has established sales tax nexus in one or more states and you're currently managing sales tax manually in Dynamics GP, you have several options. There's no one correct way to go about this—each business gets to evaluate its situation and determine its own path.

1. Continue using Dynamics GP with a third-party tax engine.

Many organizations choose to extend Dynamics GP's functionality by implementing a third-party sales tax engine, such as Avalara AvaTax. External tax engines can help automate calculations, maintain up-to-date tax rates, and simplify compliance management while allowing you to continue operating in GP. Even if you have yet to reach nexus in any state, Avalara by AvaTax can alert you when you begin to reach that threshold.

An additional advantage of this path is that many third-party tax solutions integrate with both Dynamics GP and Business Central, helping create a bridge between the two for an eventual migration. While some configuration work will still be required in each platform, your team will already be familiar with the tax management solution itself and won't need much retraining. That's one less thing to worry about.

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2. Begin the transition to Business Central.

Changing tax management needs, including reaching nexus, are significant enough to warrant a transition to Business Central sooner rather than later, as you will mitigate your risk of falling out of sales tax compliance.

An earlier transition also allows more time for planning, testing, training, and process improvements within Business Central before Dynamics GP support officially ends.

If you take away only one piece of advice from this article, let it be this: start planning your transition from Dynamics GP to Business Central sooner rather than later. Waiting until 2029 can leave your business scrambling to migrate critical processes, resolve unexpected issues, and train users under tight deadlines.

No matter which migration path you choose, giving yourself enough time to evaluate and improve your existing sales tax processes before moving to a new ERP is essential. An early transition enables your team to address inefficiencies, reduce compliance risks, and create a smoother overall implementation experience.

Here are some of the key benefits of making the move early:

Incorrect sales tax collection can create serious financial risks for businesses. If your company under-collects sales tax and is later audited, the responsibility to pay the difference typically falls on your business, not your customers.

That means unexpected tax liabilities may have to come directly out of your operating budget.

Preparing your systems now means you can continue to calculate and collect the correct tax amounts across all jurisdictions where you do business, even during a period of transition.

Many accounting teams still rely heavily on manual processes for tax calculations, exemption tracking, reconciliation, and reporting within GP. If your business is expanding into additional states and sales channels, those manual processes will become increasingly time consuming, confusing, and difficult to maintain.

An external tax engine with Dynamics GP or Business Central can introduce automation into many of these responsibilities, including:

• Tax calculations
• Jurisdiction tracking
• Tax exemption management
• Tax returns and reporting

Reducing manual work allows your accounting staff to spend more time on strategic financial analysis and less time maintaining spreadsheets or researching tax rates.

Even though Dynamics GP is available for several more years, ERP transitions are rarely quick or simple projects. Planning early provides greater flexibility and allows organizations to improve processes gradually, rather than rushing through major operational changes later.

Sales tax management is one area where early planning can significantly reduce future headaches. By streamlining these processes before migration, you can simplify implementation and avoid trying to solve multiple operational challenges at once.

Still fearing the move from Dynamics GP to Business Central? Our Syvantis consultants can help guide you every step of the way.

One major advantage of Business Central is its modernized approach to tax management. While it doesn't include all the features of a tax engine like Avatax, Business Central offers more automation, visibility, and flexibility for growing operations than Dynamics GP. With the move from Dynamics GP to Business Central, here are the tax capabilities that are built in to BC.

Business Central can automatically calculate sales tax based on the destination of shipments. Instead of manually entering rates, the system can determine applicable taxes using state, county, city, and other local tax rules.

Users can still override tax values when necessary, but automation greatly reduces the risk of manual entry errors.

Business Central integrates directly with external tax engines, such as Avalara, helping businesses stay up to date with changing tax regulations and rates. This real-time connectivity can improve accuracy and reduce the need for manual tax updates.

Even if your business hasn't yet reached economic nexus, tools like Avalara can monitor sales activity and alert your team when you're approaching a threshold in any state.

Because Business Central centralizes tax data and reporting, it can also streamline the process of preparing state sales tax returns. Organized reporting reduces manual reconciliation work and helps businesses prepare tax returns for multiple states with greater confidence.