How to Control Business Expenses
Before You Start
You need access to your business bank statements and credit card statements for the past three months. If you use accounting software, export a detailed expense report for the same period. Having the raw data in a spreadsheet where you can sort, filter, and annotate makes the audit process much more effective than scrolling through bank statements on screen. Block 90 minutes for the initial audit; subsequent quarterly reviews will take 30 to 45 minutes once the system is in place.
Step-by-Step Expense Control
Download three months of bank and credit card statements as CSV files. Import them into a spreadsheet and add a "Category" column. Sort every charge into one of three buckets. Fixed costs are the same amount every month and are contractually committed: rent, insurance, loan payments, salaries. You cannot easily reduce these in the short term. Variable costs scale with business activity: inventory, shipping, marketplace fees, payment processing fees, advertising. These move with revenue and can be optimized. Discretionary costs are optional: software subscriptions, tools, training, conferences, professional memberships. These are the first place to look for cuts because eliminating them has no impact on revenue. Add a second annotation column for "Essential / Optimize / Eliminate" that you will fill in during the review.
Filter your spreadsheet to show only recurring charges (same vendor, same amount, monthly). List every subscription, SaaS tool, and recurring service. For each one, answer three questions: When did I last actively use this tool? Does it directly support revenue generation or critical operations? Is there a cheaper alternative that does the same thing? Any subscription you have not logged into in the past 30 days is a cancellation candidate. Any subscription with a free tier or cheaper plan that covers your actual usage should be downgraded. Most businesses find $100 to $500 per month in subscriptions that can be immediately cancelled without any operational impact. That is $1,200 to $6,000 per year redirected from waste to working capital. Common offenders include design tools with unused premium tiers, project management software used by only one person, analytics tools that duplicate data available in free platform dashboards, and marketing tools signed up for during a trial that auto-renewed.
Advertising is typically the largest variable expense for ecommerce businesses, and it is also the most prone to waste. Pull return on ad spend (ROAS) data for every advertising channel and campaign. ROAS is revenue generated divided by advertising cost. A ROAS of 3.0 means every $1 spent generates $3 in revenue. For most ecommerce businesses, a ROAS below 2.0 means the campaign is not covering its costs plus your other variable expenses (COGS, shipping, fees). Campaigns below your break-even ROAS should be paused immediately, not optimized or given "more time." They are actively consuming cash. Campaigns between break-even and your target ROAS deserve optimization attention (new creative, tighter targeting, keyword refinement). Campaigns above your target ROAS may warrant increased budget if the extra spend maintains similar returns. This analysis alone often frees up 15% to 25% of the advertising budget by eliminating money-losing campaigns that were running unmonitored.
Identify your five largest vendors by annual spend. For each one, research current market rates from competitors. Then contact each vendor and request a rate review. For shipping carriers, provide your monthly volume data and ask for volume-based discounts. UPS and FedEx both have published discount programs for small businesses, and third-party shipping services like Pirate Ship and ShipStation negotiate bulk rates that you can access through their platforms. For payment processors, compare your effective rate (total fees divided by total transaction volume) against competitors like Stripe, Square, and PayPal. Even a 0.2% reduction on a business processing $50,000 per month saves $100 per month or $1,200 per year. For warehouse and 3PL providers, request a rate review annually and get competitive quotes from two to three alternative providers to use as negotiating leverage. Vendors expect annual rate reviews from their business customers and often have retention pricing they will offer when presented with a competitive alternative.
Expense creep happens because new costs are added throughout the year without a corresponding review to remove old costs. Schedule a recurring quarterly calendar appointment (one hour on the first Monday of every quarter works for most business owners) dedicated to expense review. During this review: run through all new subscriptions and recurring charges added since the last review, check ROAS on all advertising channels, compare year-over-year spending in each category to identify unexpected increases, and review any contracts approaching renewal dates where renegotiation is possible. The quarterly cadence catches new waste before it accumulates and keeps vendor renegotiation on a regular schedule. Businesses that conduct quarterly expense reviews typically spend 5% to 10% less than businesses that never review, which translates to thousands of dollars per year for most ecommerce operations.
Expense Categories Worth Special Attention
Marketplace Fees
Amazon referral fees (typically 15% of the sale price), FBA fulfillment fees ($3 to $8 per unit depending on size and weight), and FBA storage fees ($0.87 to $2.40 per cubic foot per month depending on season) are significant expense categories that many sellers accept without optimization. Review your FBA fee structure annually. Products with low selling prices relative to their shipping weight may be more profitable to fulfill yourself or through a 3PL. Products with low turnover incur escalating storage fees that may exceed the eventual selling margin. Amazon's FBA revenue calculator can model the per-unit profitability of every SKU, and products that are not profitable after all Amazon fees should either be repriced or moved to a more cost-effective fulfillment method.
Software and Tools
The average ecommerce business uses 12 to 20 software tools, and most business owners cannot list all of them from memory. That gap between tools used and tools remembered is where subscription waste hides. Create a master list of every software tool your business pays for, including the monthly or annual cost, the primary user, and the core function it serves. Review this list during your quarterly audit. Consolidation is often possible: a tool that provides email marketing, landing pages, and automation might replace three separate tools that each handle one of those functions. The consolidated tool may cost more than any single tool it replaces but less than all three combined.
Returns and Refunds
Returns consume cash through refund processing, return shipping costs, restocking labor, and inventory that often cannot be resold at full price. If your return rate exceeds your category average (typically 5% to 10% for most ecommerce categories, 15% to 30% for apparel), investigate the root causes. Better product descriptions, accurate size charts, higher-quality product photos, and honest marketing reduce return rates by setting accurate customer expectations. Every percentage point reduction in return rate directly improves cash flow. Our returns management guide covers strategies for minimizing returns while maintaining customer satisfaction.
The Expense Mindset
Effective expense control is not about spending as little as possible. It is about getting maximum value from every dollar spent. Some expenses have enormous returns: a $500 per month advertising campaign that generates $5,000 in revenue is an expense you should increase, not decrease. The goal of the audit process is to distinguish between expenses that generate value (keep and optimize), expenses that once generated value but no longer do (cut), and expenses that never generated measurable value (cut immediately). This distinction requires data, which is why connecting every expense to a measurable outcome (revenue generated, time saved, risk mitigated) is the foundation of sustainable expense management.