Open-to-Buy (OTB) is an essential financial and inventory planning strategy designed to help fashion retailers determine exactly how much inventory to purchase at any given point during a selling season. An effective OTB plan starts with your revenue targets for coming months and calculates the dollar amount of stock required to achieve those goals without over-committing working capital.

In today’s fast-paced retail landscape, mistakes in inventory planning can quickly lead to severe overstocking or understocking. Against a backdrop of rising operational costs and shifting consumer trends, maintaining an agile OTB process is the key to protecting working capital and maximizing gross margins.

Why Open-to-Buy Planning Is Vital for Fashion Retailers

Without a structured OTB framework, buyers often place large upfront purchase orders based on initial forecasts, leaving no financial reserve to react to real-time sales performance.

Implementing a dynamic OTB model allows merchandising teams to retain financial flexibility throughout the season—enabling them to reorder top-selling styles rapidly while curbing purchase orders for slow-moving inventory before excess stock accumulates.

The Fundamental OTB Formula & Core Variables

At its core, Open-to-Buy measures the difference between inventory required to meet monthly sales projections and stock already on hand or on order:

• Planned Sales: The projected revenue target for a given period based on historical performance and market trends.
• Planned Markdowns: Expected price reductions, promotional discounts, and seasonal clearance events factored in advance.
• Planned End-of-Month (EOM) Inventory: The desired target inventory level needed at the end of the month to support the next month’s sales velocity.
• Beginning-of-Month (BOM) Inventory: Actual stock available at the start of the monthly period.
• On-Order Stock (PO Pipeline): Inventory orders already placed with suppliers and currently in production or transit.

Key Strategic Benefits of OTB Control

By actively managing OTB budgets across categories, fashion brands gain significant competitive advantages:

Preventing Overstock & Heavy Markdowns: Avoids locking up liquid cash in stagnant inventory, reducing the need for aggressive end-of-season clearance sales.

Capitalizing on Trending Products: Preserves purchasing power so buyers can chase in-season trends, top-performing reorders, and quick-turn supplier programs.

Improving Cash Flow Health: Aligns inventory expenditure directly with incoming revenues, maintaining healthy operating cash flows for marketing and expansion.

Streamlining Open-to-Buy with Look Cloud Fashion Platform

Managing OTB calculations across disconnected spreadsheets and static accounting reports is time-consuming and highly prone to human error.

Look Cloud Fashion Platform integrates real-time POS sales data, stock receipts, and Purchase Order tracking directly into a dedicated Open-to-Buy module. By automating OTB calculations and providing visibility into open budgets by department, category, or store door, Look empowers buyers to make data-driven purchasing decisions with confidence.