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Amazon FBA: The Math Behind Hidden Fees and Declining Profits

Is Amazon FBA still viable? We break down the real numbers on PPC ad-spend, return rates, and why your margins might be disappearing.

By MyBizNerd Team · Published

Key Takeaways

  • How much you earn has dropped to 15–20% for sellers on Amazon. This is because ads now eat up to 30% of what products bring in.
  • Plan to lose 10–15% of your items due to customer returns. Many of these items cannot be sold again. You will also pay Amazon to throw them away.
  • You will likely need at least $5,000 to $10,000 to start. This covers your first products, good photos, and ads for the first three months.

Years ago, you could sell a simple kitchen item online. You would put your brand on it and make money easily. Today, many stores sell that same item. They all fight for sales on Amazon. If you see Amazon FBA (Fulfillment by Amazon) as a way to quit your job, it's not a trick. But it is very hard to make a lot of money.

You Must Pay to Play on Amazon Ads

Most new sellers do not know that Amazon is a giant ad company. It also happens to ship things. Just having a good product is not enough anymore. To show up first in searches, you must pay for ads. These are called PPC (Pay-Per-Click) ads.

Ten years ago, an ad click might cost you 30 cents. For popular items like vitamins or pet food, one click could cost $2.00 to $5.00. If only 1 out of 10 clicks leads to a sale, you pay $20 or $50 to get one customer. If your item sells for $40, you have already lost money. This is before shipping costs. Rising ad costs are the main reason many sellers quit in their first six months.

Your Profit Is Smaller Than You Think

When you use FBA, you pay Amazon for shelf space and to handle your products. Amazon takes money at every step. You pay a referral fee (usually 15%). You also pay a fee for Amazon to ship your items, based on size and weight. Plus, storage fees go up during holidays.

Then there are returns. Amazon makes it very easy for customers to send items back. For many products, 15% or more are returned. In a regular store, you check returns and put them back. But FBA returns often arrive broken or in torn packages. Amazon might say these items cannot be sold. You then pay them to send the junk back to you or throw it away. (Note: we may earn money if you sign up for tools mentioned here.)

Hidden Money You Need to Start

You cannot start this business with $500 and a laptop. To get a good price from a factory, you usually need to order 500 to 1,000 items. If each item costs $10, that's $10,000 stuck in a shipping container.

If you bring these items from another country, you need to know about U.S. Customs and Border Protection rules. You also need to know about taxes on imported goods. An unexpected tax of 25% on electronics can wipe out all your yearly profit. This can happen before your items even reach the Amazon warehouse.

How to Keep Your Money Flowing

If you still want to do this, you must be very good with numbers. A small print shop or a toy maker can still make money. But they must find special products that not many others are selling.

  1. Choose the Right Business Type: Do not run this using your personal name. Most sellers set up an LLC (Limited Liability Company). This protects your personal money. You can find help on starting a business at the Small Business Administration.
  2. Do Not Use Your Social Security Number: Get an EIN (Employer Identification Number) right away. This keeps your business taxes separate from your personal life. You usually need it to open a business bank account. For steps on this, see our guide: Ditch Your Social Security Number for a Business EIN.
  3. Check All Your Costs: This means adding up every cost. From the factory to the customer's front door. If you don't make at least 30% profit after all fees and ads, don't sell that product.

The Answer

Amazon FBA is a real business. But the dream of making money without working is gone. It is a tough job involving shipping and selling. If you like spreadsheets, managing supplies, and checking facts closely, you can make money. If you just want to click buttons and watch your bank account grow, put your $10,000 in a savings account that pays good interest instead.

This means FBA is a risky business where you hold products. It's not a get-rich-quick plan. Only use money you can afford to lose. You will spend the first few months learning how to run ads.

Related free tool

Startup Cost Calculator — Use this to add up all your starting costs. It's free and no signup is needed to start.

📋 Disclaimer

This article gives information only. It is not legal, tax, money, or expert advice. Rules and laws change often. The information here might not be the most current. Always talk to an expert (like an accountant, lawyer, or money advisor) before making business choices. MyBizNerd may get money from links, but this does not change our advice.