VVS Multi Platform Side Hustle Profit Calculator

Why net profit per platform is the only comparison that matters

Revenue per platform is misleading. A platform generating $2,400/month in revenue with $1,800 in combined fees, materials, and shipping leaves $600 net. A platform generating $1,600/month with $600 in costs leaves $1,000 net. The lower-revenue platform is significantly more profitable. Without running the full cost stack for each platform, you cannot know which situation you are in.

The tool computes Net Profit as revenue minus platform fee minus processing fee minus shipping minus materials minus advertising for each platform you add. That is the real return from each channel. Sum all platforms and you get Total Monthly Net Profit — the number your side hustle actually generates after all the platforms take their cuts.

Platform fees — where the biggest surprises live

Platform fee percentages vary significantly across selling channels. Etsy charges a 6.5% transaction fee plus a $0.20 listing fee and a processing fee of approximately 3% plus $0.25. Amazon FBA takes 8–15% referral fee plus fulfillment fees that can reach $3–6 per unit depending on size. Fiverr takes 20%. TaskRabbit takes 15%. Poshmark takes 20%. Each of these compounds differently.

Enter the combined effective platform fee percentage for each channel — not just the headline rate. If you are on Amazon FBA, the referral fee plus FBA fee combined often runs 30–40% of the selling price. If that percentage is not in your mental model, you are likely overestimating your Amazon profit by a wide margin.

Processing Fee is separate from platform fee in the tool because some platforms stack both. Etsy charges its own transaction fee and then adds a payment processing fee on top. Entering both as separate percentages gives you the most accurate net profit calculation.

Average hourly rate and why it changes which platforms you prioritize

Total Monthly Net Profit divided by total weekly hours is the Avg Hourly Rate output. This number is often the most clarifying data point in the whole dashboard. A side hustle generating $900/month from 12 hours per week is earning $75/hour of work. A hustle generating $1,200/month from 30 hours per week is earning $40/hour. The first is dramatically more valuable per unit of time even though it produces less total income.

Hours Per Week per platform captures this efficiency difference. A platform that requires manual listing, customer service, packing, and shipping can easily consume 15 hours per week. A platform where delivery is automated or digital might require 3. Enter what you actually spend, not what you planned to spend, and the average hourly rate reflects your real compensation.

The Best Platform output is determined by net profit, not revenue. The Worst Platform flag surfaces the channel where either fees are highest or the revenue-to-effort ratio is lowest — giving you a specific target for deprioritization or renegotiation.

Using the Monthly Income Goal to reverse-engineer your effort allocation

The Monthly Income Goal input asks you to set a target net profit before you look at the output. If your goal is $2,000/month and the model shows $1,350 across all current platforms, you know the gap is $650. You can then ask: would adding one more platform fill that gap, or would scaling the best existing platform by increasing advertising or volume produce better returns?

Scaling the best platform is almost always more efficient than adding a new one. Each new platform adds platform-specific setup time, learning curve, listing requirements, customer service protocols, and fee structures to master. The Scenario section of the tool lets you model what a 30% revenue increase on your best platform would add to net profit versus onboarding a new channel.

When the numbers say to quit a platform

The Worst Platform flag is not just information — it is permission to stop. If a platform is generating $300/month gross but netting $80 after all costs and consuming 8 hours per week, it is paying $10/hour. That time has better uses: more volume on the best platform, higher-margin product development, or simply rest that prevents burnout and protects the core hustle.

The decision to exit a platform is often emotionally difficult because it feels like giving up revenue. The model shows you that it is not — it is redirecting time from $10/hour work to $50/hour work. That is not contraction, it is optimization. Make the decision with numbers rather than sunk-cost loyalty to a channel that never earned it.

Add your platforms now — free, no login — and find out which one deserves more of your time and which one has been quietly costing you both.

VVS Multi Platform Side Hustle Profit Calculator vs. the alternatives

How to use it

1. Add each platform you sell on by clicking Add Platform and entering the platform name.
2. Enter Monthly Revenue for each platform as what actually cleared to your account last month.
3. Set Platform Fee (%) and Processing Fee (%) to the real combined rates for each channel.
4. Enter Shipping Costs, Materials or COGS, and Advertising Spend as flat monthly dollar amounts.
5. Log Hours Per Week for the real time spent on each platform — listing, customer service, fulfillment.
6. Set your Monthly Income Goal and read Best Platform, Worst Platform, and Avg Hourly Rate in the summary.

Who it's for

• Etsy and eBay seller discovering which platform earns more per hour — Enters $1,800 Etsy revenue with $620 in fees and materials, 10 hours/week — and $1,200 eBay revenue with $380 in costs, 6 hours/week — finds eBay earns $137/hour versus $118/hour on Etsy.
• Gig worker across Fiverr and Upwork optimizing platform mix — Adds both platforms with real fee percentages (20% Fiverr, 10% Upwork), sees net hourly rate on Upwork is $24 higher — shifts new client acquisition focus to Upwork.
• Physical product seller on Amazon FBA and Etsy — Enters 35% effective Amazon fee rate versus 12% effective Etsy rate at similar revenue — discovers Amazon is $340/month less profitable and considers reducing that SKU's Amazon inventory.
• Creator selling digital products on Gumroad and a personal site — Models 10% Gumroad fee versus near-zero for personal site — sees the business case for investing in direct traffic rather than relying on the marketplace.
• Someone setting a $2,000/month net target — Enters current platform data showing $1,350 net, uses the scenario tool to model whether a 40% volume increase on the best platform closes the $650 gap before adding a new channel.

Key terms

Platform fee

The percentage of gross revenue that a marketplace keeps as a commission — distinct from payment processing fees, which are applied by the payment processor.

Effective fee rate

The combined platform fee plus processing fee as a percentage of gross revenue — the real cut the platform takes before your costs begin.

Average hourly rate

Total monthly net profit divided by total weekly hours worked across all platforms. The single most useful metric for comparing how efficiently different platforms use your time.

Cost of goods (COGS)

The direct cost of materials, manufacturing, or purchasing the items you sell. For physical product sellers, this is usually the largest non-fee cost and the first place to look when margins are thin.

Net profit

Platform revenue minus all fees, shipping, materials, and advertising. The amount you actually keep from each platform before tax.

Sources & further reading

• Federal Reserve — Economic Well-Being of US Households
• Bankrate — Side Hustle Survey
• SBA — Business Guide
• Etsy Seller Handbook
• Gusto — Self-Employment & Payroll Resources