How to Improve Invoice Collections in NetSuite: 7 Ways to Get Paid Faster

Getting an invoice out the door is only the beginning of the accounts receivable process.

The real challenge is getting customers to pay on time.

Late payments can put pressure on cash flow, increase the workload of accounts receivable teams, and make it harder for businesses to forecast when cash will actually be available. As the number of customers and invoices grows, manually monitoring outstanding balances and following up with customers becomes increasingly difficult.

For businesses using NetSuite, improving invoice collections is not simply about sending more reminders. It is about creating a consistent, structured process that communicates with customers at the right time, reaches the right people, and escalates appropriately when invoices remain unpaid.

Here are seven ways businesses can improve invoice collections and get paid faster.

1. Start Collections Before an Invoice Becomes Overdue

One of the biggest mistakes businesses make is treating collections as something that starts after an invoice becomes overdue.

By then, the payment is already late.

A more effective approach is to communicate with customers throughout the payment cycle.

For example, a collections process might include:

• Invoice notification when the invoice is issued
• Friendly reminder before the due date
• Reminder shortly before payment is due
• Due-date notification
• Follow-up after the invoice becomes overdue
• Escalation for significantly past-due balances

The objective is not to pressure customers unnecessarily. It is to make sure invoices do not get forgotten.

For companies processing a high volume of invoices, this is one of the areas where automation can make a meaningful difference. Rather than having someone manually monitor every invoice and calendar each follow-up, the system can execute communications according to predefined rules.

This approach is often referred to as dunning.

Modern dunning does not have to mean sending increasingly aggressive overdue notices. It can be a structured communication process that begins before an invoice is due and becomes progressively more targeted as the invoice ages.

2. Make Sure Collections Communications Reach the Right Person

An invoice cannot be paid if it never reaches the person responsible for paying it.

The same is true for collection reminders.

This becomes particularly important when dealing with larger organizations, multiple entities, or customers with more complex accounts payable structures.

The person who receives an invoice may not necessarily be the person who handles overdue payments.

For example, a customer account might have:

• An accounts payable contact
• A billing contact
• A finance manager
• A department head
• A purchasing contact
• A corporate or parent-company contact

Standard email fields may not always capture all the people involved in the payment process.

This is where having the flexibility to define additional recipient fields can become valuable.

Instead of limiting collections communications to the standard recipient information available in NetSuite, businesses can maintain additional customer-specific contacts and use them as part of their collections workflow.

For example, a company could designate separate contacts for:

Invoice Recipient → AP Contact → Finance Manager → Escalation Contact

The result is a collections process that reflects how the customer’s organization actually handles payments, rather than forcing every customer into the same communication structure.

This type of flexibility can be particularly useful for businesses with enterprise customers, multiple subsidiaries, or customers where invoice and escalation contacts are different people.

3. Automate Follow-Ups Instead of Relying on Manual Reminders

Manual collections can consume a surprising amount of time.

An AR specialist may start the day by reviewing an aging report, identifying overdue invoices, opening individual customer records, preparing emails, attaching statements or invoices, and documenting the follow-up.

Multiply that process across hundreds or thousands of invoices and the administrative workload becomes substantial.

Automation allows finance teams to define the collections process once and let the system execute routine follow-ups according to predefined rules.

For example, a company could establish communication stages based on invoice status:

Pre-due → Due → 1–15 days overdue → 16–30 days overdue → 31+ days overdue

Each stage can trigger a different communication.

This creates a consistent process without requiring someone to remember which customers need to be contacted each day.

Solutions such as the Excelym NetSuite Dunning Solution are designed to support this type of automated workflow within NetSuite, allowing businesses to configure dunning communications based on invoice timing and status.

The benefit is not simply that an email gets sent automatically.

The bigger benefit is that the AR team can move from managing reminders to managing exceptions.

Instead of asking:

“Which customers do I need to chase today?”

the team can focus on:

“Which customers still need human intervention?”

That shift can make a significant difference as the volume of receivables grows.

4. Build a Progressive Collections and Escalation Process

Not every overdue invoice requires the same response.

A customer who is one day late probably should not receive the same communication as a customer who has been overdue for 60 days.

An effective collections strategy should become more targeted as an invoice ages.

For example:

Stage 1: Pre-Due

A friendly reminder that payment is approaching.

Stage 2: Due Date

A notification that payment is now due.

Stage 3: Early Overdue

A polite request to arrange payment.

Stage 4: Significantly Overdue

A more direct communication requesting payment or an explanation for the delay.

Stage 5: Escalation

The communication is expanded to additional customer contacts or management-level recipients.

This is where hierarchical multi-level recipients can provide an important advantage.

Instead of sending every reminder to the same person, businesses can configure different recipient levels as an invoice moves through the collections process.

For example:

Level 1: Accounts Payable Contact

↓

Level 2: Billing or Finance Contact

↓

Level 3: Finance Manager

↓

Level 4: Senior or Corporate Contact

The specific hierarchy will depend on the organization’s collections policy, but the concept is straightforward: the longer an invoice remains unpaid, the more appropriately the communication can escalate.

This provides a more controlled approach than simply sending increasingly frequent emails to the same recipient.

It also helps ensure that an overdue invoice does not remain invisible to the people who may be able to resolve it.

5. Match the Collections Strategy to the Customer

Not every customer should receive the same collections message.

A long-standing customer with a strong payment history may require a friendly reminder.

A customer with several significantly overdue invoices may require more direct communication.

A large enterprise customer may require escalation through multiple contacts.

A flexible collections process can therefore use different schedules, messages, recipients, and escalation levels depending on the customer and invoice.

For example:

This kind of structure turns collections into a defined workflow rather than a series of ad hoc emails.

And because different customers may have different contact structures, the ability to use additional recipient fields becomes particularly useful.

6. Give Customers the Information They Need to Pay

Collections is not always about convincing a customer to pay.

Sometimes, the customer simply needs the right information.

A payment may be delayed because:

• The invoice was not received
• The invoice was sent to the wrong contact
• A purchase order number is missing
• Supporting documentation is required
• The customer cannot identify which invoice a balance relates to
• The customer’s AP department needs additional documentation

This is why effective collections communications should provide useful information rather than simply saying:

“Your invoice is overdue. Please pay immediately.”

Depending on the situation, a collections notice may need to include the invoice, statement, payment details, supporting documents, or other information necessary for the customer to process payment.

The easier it is for the customer to understand what is owed and how to pay it, the fewer unnecessary obstacles stand between the invoice and the payment.

7. Measure Collections Performance and Focus on DSO

Automation is valuable, but finance teams also need to know whether their collections process is actually working.

One of the most important metrics is Days Sales Outstanding (DSO).

DSO measures the average number of days it takes a company to collect payment after making a sale.

A high or increasing DSO can indicate that customers are taking longer to pay, creating additional pressure on working capital and cash flow.

Finance teams should monitor metrics such as:

• DSO
• Accounts receivable aging
• Current versus overdue receivables
• Average days to payment
• Past-due invoice value
• Collection rates
• Number of overdue invoices
• Collection activity by customer

The objective is not simply to send more collection emails.

The objective is to collect cash faster while reducing the amount of manual work required to do it.

The Real Challenge With Collections Automation

At first glance, automated collections sounds simple:

Find overdue invoices → Send an email → Wait for payment.

In practice, effective collections are more complicated.

The system needs to know:

• When should the customer be contacted?
• What should the message say?
• Which invoice or invoices should be included?
• Who should receive the communication?
• What happens if the customer does not respond?
• When should the next reminder be sent?
• When should the communication escalate?
• Who should receive the escalation?

That last question is particularly important.

A collections process can be perfectly automated from a scheduling perspective and still be ineffective if every message goes to the same inbox.

This is why recipient flexibility and escalation logic can be just as important as the ability to schedule reminders.

A More Flexible Approach to NetSuite Dunning

NetSuite already contains much of the information needed to manage accounts receivable: customers, invoices, payment terms, due dates, balances, and transaction history.

The opportunity is to turn that information into a repeatable collections workflow.

Excelym’s NetSuite Dunning Solution takes this approach by allowing businesses to configure automated dunning communications within NetSuite while providing additional flexibility around recipients and escalation.

For example, businesses can define custom recipient fields beyond the standard NetSuite recipient information. This can help accommodate customer-specific contact structures where the person receiving an invoice is not necessarily the person responsible for resolving an overdue balance.

The solution also supports hierarchical multi-level recipients, allowing businesses to establish progressive escalation workflows as invoices remain unpaid.

In practice, that could mean starting with an AP contact and, if the invoice remains overdue, progressively involving billing, finance, or management contacts.

The important distinction is that the system is not simply automating emails.

It is helping businesses automate the logic behind their collections process.

Invoice Collections Should Be a Process, Not an Event

Effective collections do not begin when an invoice becomes 30 days overdue.

They begin much earlier.

A strong invoice-to-cash process connects:

Invoicing → Customer communication → Pre-due reminders → Due-date reminders → Collections → Escalation → Payment → Reconciliation

When these activities are managed separately and manually, invoices can fall through the cracks.

When they are connected through automation, finance teams can create a more consistent and predictable collections process.

This becomes increasingly important as a business grows.

A collections strategy that works when a company has 50 customers may become difficult to manage when it has 500 or 5,000.

The Goal Isn’t More Collection Emails. It’s Faster Payment.

It is easy to measure collections activity by the number of emails sent.

But that is not the metric that matters most.

A finance team could send thousands of automated reminders and still have a collections problem.

The real questions are:

Are customers paying sooner?

Is overdue AR decreasing?

Is DSO improving?

Is the AR team spending less time on repetitive follow-up?

Are overdue invoices being escalated to the right people?

These are the outcomes that matter.

Automation should therefore be viewed as a way to remove repetitive work, improve consistency, and give finance teams more control over the invoice-to-cash process.

The Bottom Line

Improving invoice collections is not about sending more emails.

It is about creating a better process for moving invoices from issued → due → paid.

For growing businesses, that means:

• Communicating before invoices become overdue
• Reaching the right customer contacts
• Supporting customer-specific recipient structures
• Automating routine follow-ups
• Escalating overdue balances appropriately
• Involving additional stakeholders when necessary
• Providing customers with the information they need to pay
• Monitoring AR performance and DSO

For companies already using NetSuite, much of the information required to automate this process is already available in the ERP.

The next step is connecting that information to a collections workflow that can adapt to how customers actually pay.

The Excelym NetSuite Dunning Solution provides one way to do that, with configurable dunning schedules, flexible recipient management, and multi-level escalation capabilities built around the NetSuite AR process.