Selling in interest-free installments: how does it work and what benefits does it offer your business?

In Argentina, interest-free installments are a key strategy for boosting sales, especially for high-value products. This system can significantly improve conversion and customer experience by facilitating access to larger purchases. In Mexico, this is usually implemented as interest-free months (MSI).

How to sell in installments without interest?

Selling in interest-free installments allows customers to pay for their purchases in several monthly payments without additional costs, which facilitates access to high-value products. This modality eliminates economic barriers that usually slow down the purchase decision. By not assuming interest, the customer perceives a concrete benefit by paying in equal parts.

What is the simple installment plan?

The simple installment plan works in several ways and adapts to the structure of each company. This flexibility makes it possible to establish:

• The total amount financed.
• The number of installments available (3, 6, 12 or more).
• If there is a down payment.
• If they are fixed or variable installments.
• And whether or not interest is applied.

This variety of configurations allows the business to define a strategy according to the behavior of its target audience, optimizing profitability without losing competitiveness.

Types of payment installments

Here are the main types of payment plans to understand why interest-free installments represent a strategic advantage:

• Interest-bearing installments: each installment includes a portion of the principal (original amount) and a financial cost associated with the chosen term. It is common in bank products or traditional financing, but can negatively affect the consumer's perception of the final price.
• Interest-free installments: the total value of the purchase is divided in equal parts, without applying any additional surcharge. This scheme is widely used in e-commerce and retail in Argentina, and has been proven to increase both the average ticket and the conversion rate.

What is the real cost of selling in interest-free installments?

Although the customer perceives interest-free installments as a direct benefit, it is important to understand that there is always a financial cost associated with this payment method. This cost does not disappear: it is simply assumed by someone in the commercial chain.

There are three possible schemes to manage the cost of selling in interest-free installments:

Trade bears the cost

 This is the most frequent option, especially in online stores or physical businesses looking to scale their sales. The financial cost is deducted from the total amount received for the sale. In return, the business gains in higher conversion, loyalty and sales volume.

It is assumed by the financial institution or issuing bank.

 This modality is less frequent and is usually applied in specific promotional campaigns promoted by banks or credit cards. In this case, the merchant receives the full amount and the bank assumes the interest.

Shared financing between trade and customer

 It is a flexible model, where part of the interest is absorbed by the business and part is passed on to the buyer. Although they are not "100% interest-free installments", the customer's perception is usually still positive if the surcharge is low.

Offering simple interest-free installments should be seen as a strategic investment rather than an operating cost. The metrics bear this out:

• Increase in average ticket
• Improved conversion rate
• Reduced cart abandonment
• Strengthening the customer experience

Implementing these payment methods in Latin America does have a cost, yes, but it also has a direct return in sales and positioning against the competition.

Payment solutions in Argentina

In the Argentine ecosystem, there are several payment processors that allow the implementation of interest-free installments with flexibility and scope, such as Rebill, Mercado Pago, Pago Nube, Mobbex, Ualá Bis.

And for companies operating in several Latin American countries or looking for a more comprehensive solution, Rebill is positioned as a payment processor specialized in Latin America, with legal and operational presence in Argentina. Its platform is designed for companies that value details and need to scale their business model with efficiency and total control over their collections, commissions and financing.

How to integrate a payment gateway to offer interest-free installments?

To offer interest-free installments as a means of payment, it is essential to have a payment gateway, i.e., a technological platform that allows a business to collect payment electronically, connecting the customer with the available means of payment: credit cards, debit cards, bank transfers or virtual wallets. 

These tools manage the authorization, validation and processing of each transaction, complying with security standards and local regulations.

Where can quotas be offered?

The merchant can decide in which channels to enable payment in interest-free installments, including:

• Personalized payment links
• QR Code
• Own e-commerce sites or on marketplaces
• Physical points of sale (POS or terminals), where modalities such as BNPL (Buy Now Pay Later) can be offered -with providers such as GoCuotas or Wibond in Argentina-, in addition to payment with credit or debit cards.

Several payment processors active in Argentina and the region allow you to set up interest-free installments easily from your administrative panel or through their API. Some examples include Rebill, Mercado Pago, Pago Nube, Mobbex, Ualá Bis.

Each offers different options, such as selecting the number of installments, calculating the applicable commission and managing settlement terms. In most cases, the merchant receives the total amount of the sale minus the corresponding commission, without waiting for the payment of each installment.

Step by step: how does the installment payment process work?

Here is a step-by-step description of how this process works. The customer selects the interest-free installments option when paying, and the company receives the total amount through the payment gateway. Then, the customer pays in fixed monthly installments, without surcharges or interest.

1. Payment processor integration payment processor: the business incorporates a gateway compatible with installment payments (via plugins, APIs, or payment tools).
2. Customer's choice of installments: at the time of payment, the customer chooses the option "pay in installments without interest" from the processor interface.
3. Choice of payment method: the customer chooses the method of payment, credit card being the most common.
4. Verification of funds: the payment processor validates that the customer has available funds or sufficient credit.
5. Purchase authorization: if everything is correct, the operation is approved.
6. Settlement of payment to merchant: Money is not transferred immediately. The processor holds the funds temporarily and deposits them to the merchant within 1-3 business days.
7. Transaction notification: the merchant receives detailed information on who paid, how much they paid and at what time the transaction took place.

Key benefits of selling in interest-free installments

Implementing interest-free installments as a payment method not only impacts immediate conversions, but also represents a solid long-term business strategy.  

Benefits for businesses and consumers

This system not only boosts sales, but also offers concrete benefits for both merchants and consumers. The main advantages for each party involved in the transaction are detailed below.

• Increases sales and average ticket without reducing prices: by allowing customers to split their purchase at no additional cost, the psychological barriers associated with the total amount are eliminated. This increases the average value per transaction, without the need to offer discounts or compromise the profitability margin.
• It boosts loyalty by positioning the brand as accessible and flexible: brands that facilitate access to valuable products or services through interest-free installments are perceived as friendlier, closer and more customer-centric, which improves retention and strengthens the long-term relationship.
• Improved shopping experience: by reducing the perceived financial burden, the shopping process becomes smoother and more satisfying. This improved user experience can translate into better reviews, recommendations and sustained loyalty.
• Facilitates decision making: consumers tend to postpone or abandon high-value purchases when they must pay in full immediately. Interest-free installments reduce friction and speed up the decision-making process, especially in digital channels.
• Improves competitiveness: in a market like Argentina's, where installments are an essential part of purchasing behavior, not offering them can mean losing out to the competition. Having this benefit not only levels the playing field, but can also become a clear differentiator.
• It adapts to different business models: whether it is an online store, a marketplace, a subscription-based service or a physical store, interest-free installments can be applied flexibly, depending on the channel and the type of product.
• Contributes to a scalable growth strategy: by easily integrating with modern payment gateways, installments can be implemented at multiple touch points without the need for major technical developments. This allows scaling operations with agility and financial control.

If your company is looking for a solid payment solution, with regional support and tools designed to scale, Rebill offers a payment platform specialized in Latin America, with legal and operational presence in Argentina. It allows you to easily implement interest-free installments, manage multiple payment methods and optimize the customer experience from a single control panel.

Start selling more today without losing profitability,contact us and find out how our payment gateway can transform your business! 

Installment payments in LATAM: differences by country (MSI, installment plans, installments)

When a company sells in Latin America, "quotas" do not mean the same thing in every country. Purchasing habits, vocabulary, and financial mechanics vary by market, and this affects conversion, approval, and operations.

• Mexico (MSI): Interest-free months are often a key commercial lever for medium and high ticket prices. In practice, MSI is used as a selling point and requires control of the actual net amount and settlement timing.
• Brazil (installment payments ): Installment payments are widespread. The correct configuration (number of installments, rules per ticket and per product) usually impacts conversion and average ticket size.
• Southern Cone (quotas): In markets such as Argentina and Chile, quotas exist with local particularities. What is important for companies is to be able to define rules by country and avoid friction in reconciliation when commissions or settlement schemes change.

Therefore, if you operate in multiple countries, it is advisable to treat quotas as a strategy for each market, rather than as a single toggle at checkout.

How to decide whether to offer quotas (rule per ticket and margin)

Offering installments can increase conversion, but it also changes net income and cash flow. To decide, the soundest approach is to separate the decision into two layers: (1) expected commercial impact, and (2) financial and operational impact.

Simple decision model (conversion vs. financial cost)

• Step 1: Estimate incremental conversion: How much does conversion increase if you add fees to the target ticket? Ideally measured with A/B testing or at least by cohorts.
• Step 2: Estimate total cost: commissions + financial cost of the plan + impact of settlement timing.
• Step 3: Compare against alternatives: discount for immediate payment, bundles, or interest-bearing installments.
• Step 4: Decide on rules: "Quotas for everyone" is not always the best approach. Many companies earn more by setting quotas only for tickets above a certain threshold, or only for products with sufficient margins.

The sign of a good decision is that you can measure net income per transaction and per installment plan, not just gross income and conversion.

Fees and operations: reconciliation, refunds, and disputes

The challenge of quotas does not end at checkout. When there is volume, friction appears in the back office: reconciliation, returns, and disputes. If these flows are not properly resolved, operating costs increase and finance loses control of the net.

• Reconciliation: record the plan (number of installments), commissions, net amount, and settlement dates for each transaction. Without this traceability, it is difficult to explain differences between what was charged and what was settled.
• Returns: define how returns are reflected in installments (partial/total) and how they impact reconciliation. Prevent support from "improvising" criteria.
• Disputes: With quotas, there may be more customer inquiries and a higher risk of chargebacks if the experience is unclear. A consistent process reduces losses and prevents misalignment between support and finance.

In summary: quotas can be a lever for growth, but they only scale well if accompanied by consistent reconciliation and reporting.