Capital Management

When Does a Small Installment Become Less Efficient?

By Walid Mograbi · 2026-08-10 · 1 min read

If every transaction carries a fixed fee, small installments can become less efficient because each additional purchase adds more cost.

The basic idea

Dollar-cost averaging spreads your money across regular installments instead of investing it all at once.

Where the weakness appears

If each purchase has a commission or fee, then using many installments increases the total cost of execution.

Why this matters

Small fees can add up over time and reduce the final return.

Practical takeaway

This helps you balance the discipline of dollar-cost averaging against the cost of making each trade before you set the pace.

Warning

If the contributions come automatically from your salary, the picture may be different because the money is invested as it arrives.

Quick checklist

• More installments
• More commissions
• Lower net return