Free forever · No account needed · Updated June 2026

Free tools for Amazon sellers.

Profit calculators, fee breakdowns, GST tools, and more. Built for Amazon.sg FBA sellers in Singapore.

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All tools

Hover a card to preview what it calculates.

10 live · 0 coming soon
CoreLive

FBA Profit Calculator

True net profit after referral fees, FBA fees, COGS, PPC, and VAT.

Net profit£0.00
🌍 22 markets
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FeesLive

Fee Calculator

Full referral and FBA fulfilment fee breakdown by category and size tier.

Total fees£0.00
🌍 22 markets
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TaxLive

GST Calculator

GST liability on Amazon.sg sales, FBA fees, and imports.

GST liability£0.00
🌍 22 markets
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PPCLive

ACoS Calculator

Break-even ACoS, target ROAS, and true profit at any ad spend level.

Break-even ACoS0.00%
🌍 22 markets
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PPCLive

ROAS Calculator

Return on ad spend, ACoS, and ad profitability from any campaign data.

ROAS0.00×
🌍 22 markets
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CoreLive

Margin Calculator

Gross margin, markup percentage, and ROI from sale price and product cost.

Gross margin0.00%
🌍 22 markets
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CoreLive

Break-Even Calculator

Minimum sale price and break-even quantity given your fixed and variable costs.

Break-even price£0.00
🌍 22 markets
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SourcingLive

Wholesale ROI Calculator

Calculate ROI on wholesale purchases before you commit to buying.

ROI0.00%
🌍 22 markets
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InventoryLive

Restock Calculator

Know exactly when to reorder and how many units to send in.

Days of cover0d
🌍 22 markets
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SourcingLive

Revenue Estimator

Estimate monthly sales and revenue from Amazon BSR and sale price.

Monthly revenue£0
🌍 22 markets
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Why fba.tools?

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Real-time results

Every calculator updates as you type. No submit button, no loading states.

🌍

Your market, your numbers

Correct fee schedules, VAT rates, and currency for every supported market.

🔓

No account, ever

No email, no password, no cookie wall. Open a tool and use it.

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Kept current

Fee schedules updated every time Amazon makes a change. Always accurate.

Free FBA Tools for Amazon Singapore Sellers — Coming Soon

Amazon.sg connects Singapore-based sellers with shoppers across the city-state and beyond. We're building free FBA tools calibrated specifically for the Singapore marketplace — with SGD pricing, 9% GST, and the specific fee schedule for amazon.sg sellers.

What FBA Tools Are Coming for Amazon.sg Sellers?

Our Singapore tool suite will include: an FBA profit calculator with current Amazon.sg fees in Singapore dollars, an ACoS calculator for sponsored ad profitability, a restock calculator, and a wholesale ROI calculator. All tools will work in real time with no login required and no usage limits.

GST and FBA Singapore: What Sellers Need to Know

Singapore's Goods and Services Tax (GST) rate is 9% following the increase in 2024. Amazon charges GST on FBA service fees for Singapore-based transactions. The GST registration threshold in Singapore is S$1 million in annual taxable turnover — once reached, registration and quarterly filing are mandatory. Input tax credits can be claimed on GST paid on business expenses once registered. Our free GST tools for Singapore are in development and coming soon.