Collection of Overdue Dues and the FIFO Logic

What Is the Problem?

An owner has accumulated three months of dues debt and has paid an amount equal to one month. Which month will this payment count toward — the oldest or the most recent? This decision affects both the late-payment interest and the structure of the remaining debt. Incorrect matching both confuses the accounts and leads to objections.

The FIFO Logic: Oldest Debt First

The common, fair, and preferred method in practice is FIFO (First In, First Out): the incoming payment is applied starting from the oldest debt. Thus, the debt that has been waiting longest is cleared first, late-payment interest is calculated correctly, and the debt decreases in an orderly manner.

Why the Oldest Debt First?

The oldest debt is the one that has been overdue the longest, and it has accumulated the most late-payment interest. Closing it first both halts the growth of the interest and prevents uncontrolled accumulation of debt. Applying payments to the most recent debt while leaving old ones outstanding continuously increases the interest.

Application in Partial Payment

When an owner pays not the full amount but a portion, this partial amount is again credited to the oldest debt. If the old debt is not fully closed, interest continues to accrue on the remaining portion. Manual tracking of these operations is difficult; in a digital system, matching is done automatically when the collection is entered. We covered the general arrangement of collections in our collection methods article.

Transparency and Objection

When the FIFO logic is applied transparently, the owner clearly sees which debt their payment was credited to. This prevents objections of the type "but I had paid for that month." On a panel where each resident can see their own debt and payment history, matching becomes automatic and traceable.

Common Mistakes

• Crediting to the newest debt: Counting the payment toward the newest month inflates the interest on the old debt.
• Inconsistent application: Applying FIFO to some and a different method to others creates unfairness.
• Not sharing the record: If matching is not transparent, objections increase.

Related Topics

We covered enforcement proceedings for accumulated debt in our enforcement proceedings article and the late-payment interest calculation in our late-payment interest article.

This content is for informational purposes. The offset method can be adapted according to your management plan.