TaxesLedger Knowledge Base

Foundational blueprints and compliance processes for the modern tax landscape.

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Browse our full library of tax guides — from formula explainers to compliance blueprints.

86 guides

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International

Cyprus Property VAT: 5% or 19%

The 5% first-home rate covers 130 m² and €350,000 — but cross 190 m² or €475,000 and you lose it entirely, a €49,000 swing. Plus the 2027 deadline.

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Whitewashed houses with blue shutters above a small Aegean island harbour with fishing boats
International

Greek Islands VAT: the 30% Cut

24 Greek islands charge VAT 30% below the mainland from January 2026 — 17% not 24%. The full qualifying list, the band mapping, and what is excluded.

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Terracotta-roofed houses climbing a green volcanic hillside above Funchal harbour in Madeira
International

Madeira & Azores VAT Rates

Portugal has three IVA schedules, not one. Mainland 23/13/6%, Madeira 22/12/4%, Azores 16/9/4% — and the Artigo 6.º rule that decides which applies.

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Foundational

How to Get a Sales Tax Refund

The seller refunds it first, the state second. Deadlines, claim forms, the assignment of refund rights, the visitor schemes that really exist, and how businesses claim.

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Digital

Online Sales Tax Explained

Why internet orders are taxed, which address sets the rate, who collects it, when you owe use tax yourself, and what happens on orders from abroad.

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Foundational

Sales Tax Exemptions Explained

Product, use and buyer exemptions in one map: groceries, resale, manufacturing, nonprofits, government and diplomats — how to claim one and what voids it.

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Compliance

Sales Tax for Small Business: Collect, File, Remit

The full lifecycle for a small seller: register, set the right rate, document exempt customers, keep records, file every period and remit on time — with a compliance calendar.

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Calculation

Sales Tax on Discounts, Coupons and Returns

Store coupons cut the tax, manufacturer coupons don't, and a restocking fee gets three different answers in three states. The transaction rules, worked in dollars.

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Foundational

The Sales Tax Deduction Explained

Deduct sales tax or income tax on Schedule A? The $40,000 SALT cap, the IRS optional tables, adding a car on top, and three worked returns that show who gains.

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A canoe drawn up beside a cedar dock on a misty Canadian lake at dawn
International

What Is GST/HST? Canada's Sales Tax Explained

The 5% federal GST, the five HST provinces, and the ones that kept PST or QST — plus input tax credits, place of supply and the $30,000 threshold.

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Nexus

What Is Sales Tax Nexus? Every Type Explained

Physical, economic, affiliate, click-through, marketplace and trailing nexus: what creates each one, what the thresholds really count, and how to run a nexus review.

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Foundational

What Is Sales Tax? How US Sales Tax Works

The concept behind every US receipt: who pays, who collects, how state, county, city and district rates stack, what is exempt, and why online orders are taxed.

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International

What Is VAT? How Value-Added Tax Works

VAT from first principles: a four-stage £ ledger, who has to register, zero-rated versus exempt, invoices, returns, reclaims and cross-border rules.

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Compliance

Alaska Sales Tax: No State Rate, Plenty of Local Ones

Over a hundred local jurisdictions tax where the state doesn't — plus the ARSSTC system every remote seller into Alaska should know.

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Compliance

Border Shopping and Sales Tax, Honestly

What the no-tax-state trip really saves, the use-tax rule that follows you home, and when crossing the line genuinely pays.

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Compliance

Home-Rule States: CO, LA and AL Explained

Self-collecting cities, parish filing and separate registrations — why three states multiply the work, and each one's shortcut.

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Foundational

Illinois Sales Tax by City (2026)

The four layers inside Chicago's 10.25%, rates for Aurora, Naperville and beyond, and the 2025–2026 sourcing and nexus changes.

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Italian cafè receipt showing IVA at 10 percent on a marble table beside an espresso cup and euro coins
International

IVA in Italy: Rates, Meaning & Reading a Receipt

Italy's 22/10/5/4 IVA system: what each rate covers, what 'di cui IVA' means on a receipt, the four kinds of zero-IVA invoice, and tourist refunds from €70.01.

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International

IVA in Spain: Meaning & the 2026 Rates

Spain's 21/10/4 IVA system: what each rate covers, the Canary Islands' IGIC, the recargo de equivalencia surcharge, and refunds with no minimum purchase.

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Foundational

Minnesota Local Sales Taxes (2026)

Why St Paul pays 9.875% while Plymouth pays 7.45% — metro-wide taxes, city add-ons and the local-option system, city by city.

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Foundational

Oklahoma Sales Tax by City (2026)

A modest 4.5% state rate with some of America's biggest city layers — OKC, Tulsa, Stillwater, Broken Arrow, and the grocery quirk.

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Foundational

Sales Tax by County: How the Layers Stack

State + county + city + districts: the stacking order behind every combined rate, with a worked Los Angeles County example.

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Compliance

Sales Tax Changes in 2026

Every state-level change with its effective date — Illinois' grocery handover, Washington's services expansion, Chicago's transit increase, and more.

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Operations

Sales Tax Rate Changes: Effective Dates

Why local changes land on quarter days, what notice states must give, and which date governs a sale that straddles a change.

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Foundational

Special Taxing Districts: The Hidden Rate Layer

Transit, stadium and cultural districts — MCTD, RTA, RTD, Sound Transit — and why their voted borders break ZIP-level lookups.

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A birch table by a window with a mug and a blank receipt above a snow-covered courtyard
International

Sweden VAT Rates: The 25% Moms System

Why Sweden charges 25% — and what drops to 12% (food, hotels) or 6% (books, transport, culture). Plus the 120,000 kr exemption and foreign-seller rules.

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Foundational

The US Cities With the Highest Sales Tax in 2026

The major-city top ten, the small-city extremes above 11%, and the layer-by-layer anatomy of America's highest combined rates.

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International

TVA in France: Meaning & Every 2026 Rate

TVA is French VAT — and France invented it. All four rates (20/10/5.5/2.1), HT vs TTC, Corsica and overseas exceptions, and reading a French facture.

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Foundational

Washington Sales Tax by City (2026)

Seattle, Tacoma, Vancouver, Olympia and Issaquah under destination sourcing — plus the Sound Transit overlay and the 2025 services expansion.

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Ranked bar chart of the five US states with the highest combined sales tax rates
Foundational

Which State Has the Highest Sales Tax?

Two different answers depending on the measure — combined average vs state rate — plus the full ranked 2026 table.

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Map and ranked list of the five US states with the lowest combined sales tax rates
Foundational

Which States Have the Lowest Sales Tax?

The five NOMAD states with none, the lowest-rate states that do tax, and what each low-tax state charges instead.

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Foundational

Why ZIP Code Sales Tax Lookups Get the Rate Wrong

ZIP codes are postal routes, not tax jurisdictions. Where ZIP lookup is safe, where it misses by 1–3 points, and what rooftop lookup does differently.

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Operations

Amazon FBA Sales Tax

Amazon collects on marketplace orders, but FBA inventory creates physical nexus with no threshold — and never covers your own store.

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Foundational

Are Services Taxable? The 2026 State-by-State Picture for Service Businesses

Goods are taxable by default, services by exception — and the exceptions are wide. Four categories, and the invoice trap.

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Foundational

Bundled Products and the True Object Test

One undivided price can make an entire invoice taxable, including the part that would have been exempt alone.

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Foundational

Car and Vehicle Sales Tax by State

Vehicle tax follows where you register, not where you buy. Trade-in credit is where the real money moves.

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Digital

Digital Products Sales Tax

Downloads are taxed more often than streams. Permanent versus temporary access is the distinction that decides it.

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Operations

Etsy and eBay Sales Tax

The platform collects at checkout. Your thresholds, your own site, your market stall and your 1099-K gap are still yours.

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International

EU ViDA Explained

Three pillars staged across the decade, ending with structured e-invoicing and near-real-time reporting on intra-EU trade.

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International

GST/HST for Non-Resident and Digital Businesses Selling Into Canada

Register once past CAD $30,000. The simplified regime is easier to file and gives up input tax credits entirely.

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Compliance

How to Close a Sales Tax Account Without Triggering an Audit

Stopping sales does not stop the obligation. A dormant registration keeps demanding returns and accruing penalties on nothing.

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International

Input Tax Credits

GST/HST is only a cost if you fail to claim it back. Commercial use, documentation and timing decide whether a credit survives.

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International

Making Tax Digital

Filing through software is the visible half. The digital links rule is the half that fails inspections.

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Compliance

Manufacturing Sales Tax Exemptions

The exemption tracks equipment that directly changes the product — narrower than most plants assume.

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International

PST vs GST/HST

Harmonised provinces charge one HST. BC, Saskatchewan, Manitoba and Quebec charge two taxes with two registrations and two tax bases.

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Operations

Sales Tax for Construction Contractors

Contractors usually pay tax on materials and charge none on the improvement — the inverse of retail logic.

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Operations

Sales Tax for Restaurants

Grocery exemptions do not help a restaurant. Prepared food is its own category, and meals taxes stack on top.

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Foundational

Sales Tax on Gift Cards, Store Credit and Loyalty Points

A gift card is a payment method, not a purchase. Everything interesting happens at redemption.

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Compliance

Sales Tax Penalties and Interest

Two penalties charged separately, interest on top, and personal liability that survives the company.

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Operations

Shopify Sales Tax Setup

Shopify calculates where you tell it to. It will not decide your nexus, classify your products, or file anything.

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Operations

Short-Term Rental Sales Tax

Sales tax plus a local lodging tax. Platforms collect some of it, rarely all, and never register you.

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International

UK VAT Registration Threshold

Two tests, not one. The rolling twelve months is continuous, and the forward-look test can catch you before the income arrives.

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Operations

Arizona TPT vs Sales Tax

Arizona taxes the seller, not the buyer. Business classification sets the rate, and cities set their own tax base independently of the state.

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Operations

California Sales Tax by ZIP Code

California district taxes stack on a statewide base and follow city and district lines, so one ZIP can hold several correct rates.

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Operations

Drop Shipping Sales Tax: The Three-Party Problem

Two sales, three parties, one box. Which states reject your resale certificate on the wholesale leg, and how much margin that quietly costs.

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International

EU VAT OSS & IOSS: The Cross-Border Seller's Guide

One €10,000 threshold replaced twenty-seven. How the One Stop Shop works, when IOSS applies to imports under €150, and what changes the day you cross it.

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Operations

How to Find the Sales Tax Rate for Any US Address

Why ZIP codes are not tax jurisdictions, how the combined rate stacks across state, county, city and special districts, and how to verify a rate.

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Compliance

How to Register for a Sales Tax Permit in Any State

What every state asks for, why the effective date decides your back exposure, and the personal liability you accept as responsible party.

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Nexus

I Crossed a Nexus Threshold

The ordered plan after crossing a threshold — and why registering before checking when you crossed can cost you the best outcome.

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Operations

Is Shipping Taxable? Sales Tax on Shipping & Handling by State

About half of US states tax delivery charges. The three-tier framework, the handling trap that costs sellers thousands, and the mixed-shipment allocation math.

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Operations

Marketplace Facilitator Laws: Who Actually Collects Your Sales Tax

Amazon and Etsy collect the tax — but registration, nexus tracking and filing never transferred. Why marketplace sales still count toward your thresholds.

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Calculation

Origin vs Destination Sales Tax: Which Rate Do You Charge?

Sourcing decides whose address sets the rate. The origin-based states, the remote-seller override, and California's hybrid rule.

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Compliance

Resale & Exemption Certificates: The 2026 Compliance Guide

A resale certificate defers tax; an exemption certificate removes it. What makes one valid, why the seller carries the risk, and the multistate forms worth standardising on.

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Digital

SaaS Sales Tax Compliance

How subscription revenue builds nexus even where SaaS is exempt, sourcing multi-state seat contracts, MPU certificates and why bundled invoices become taxable.

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Operations

Sales Tax Filing Frequency, Due Dates & Zero Returns

How states assign your filing frequency, why it changes without warning, and why the returns with no tax on them generate most of the penalties.

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Calculation

Sales Tax Tables

Bracket schedules explained: how states convert a sale amount straight into cents of tax, and why the chart can differ from multiplying by the rate.

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Compliance

Streamlined Sales Tax

One registration across member states and state-funded compliance software — plus the filing obligation every selected state creates.

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Foundational

Use Tax vs Sales Tax: The Tax Almost Nobody Files

Same rate, same base, paid by the buyer instead of the seller. The four business triggers, and why auditors test it first.

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International

VAT Reverse Charge Explained: Why Your EU Invoice Says €0 VAT

The reverse charge moves VAT to the buyer on cross-border B2B supplies. Both sides of the entry, VIES validation, and when it stops being cash-neutral.

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Compliance

Voluntary Disclosure Agreements

Capped look-back, waived penalties and an anonymous approach — and why state contact closes the option.

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Compliance

What Triggers a Sales Tax Audit? The Real Red Flags

States data-match your returns against processors, marketplaces and federal filings. The nine signals that surface a business.

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Foundational

Why Your Receipt Taxes the Candy But Not the Bread

Grocery and clothing exemptions by state for 2026 — the thirteen states still taxing food, the clothing price caps, and the flour test that defines candy.

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Operations

ZIP Codes With No Sales Tax: The Full 0% List

Every 0% ZIP range: Delaware 197-199, New Hampshire 030-038, Oregon 970-979, Montana 590-599 — plus the Alaskan ZIPs that are genuinely zero and the ones that are not.

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Compliance

GST/HST Compliance for Canadian Businesses (2026)

Beyond the rate: zero-rated vs tax-exempt supplies, when the CRA Quick Method beats tracking input tax credits, and the non-resident digital vendor rules.

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Calculation

Do You Tip on Tax? Restaurant Tipping & Sales Tax

Tip on the pre-tax subtotal or the total? The etiquette answer, the real dollar difference, and the math.

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Foundational

European VAT Rates by Country 2026

All 27 EU states plus the UK, Norway and Switzerland — standard, reduced and super-reduced rates, local names, and what changed in 2025-26.

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Calculation

How to Work Out VAT Backwards (The VAT Fraction)

The exact formula to remove VAT from a gross total — divide by 1.20 or use the VAT fraction (1/6) — with worked examples.

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Foundational

Inc VAT vs Ex VAT: What Including & Excluding VAT Means

What 'inc VAT' and 'ex VAT' mean, why quotes and shop prices differ, and how to convert between them (with HT/TTC and Netto/Brutto).

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Compliance

How to Calculate GST/HST on Canadian Invoices

Show and calculate GST/HST/PST/QST on invoices correctly — required fields, province rates, and worked examples for small businesses.

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Digital

SaaS Sales Tax by State: The 2026 Matrix

All 50 states plus DC: which tax software-as-a-service and which do not, the legal theory each uses, and the Texas, Ohio, Chicago and Denver traps.

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Nexus

Illinois Public Act 104-0006: The End of the Transaction Trap

A deep-dive into the removal of the 200-transaction threshold and remote retailer amnesty program.

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Compliance

How to Survive a 2026 Sales Tax Audit

How to reconcile your books, manage 1099-K data-matching, and prepare for state-level audits.

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Nexus

Economic Nexus Thresholds by State 2026

Every state's threshold after Wayfair: 41 at $100,000, three at $500,000, and the two that make you cross a revenue and a transaction test.

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Calculation

Calculate Tax From Total: 2026 Step-by-Step Guide

The professional mathematical method for backing out sales tax from inclusive totals and receipts.

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Foundational

Sales Tax vs VAT — Key Differences Explained

A foundational comparison of U.S. sales tax systems versus international value-added tax models.

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Calculation

How to Calculate Sales Tax: 2026 Step-by-Step Guide

A clean and comprehensive step-by-step guide explaining how to calculate sales tax, apply formulas, extract tax, and manage multi-state nexus.

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Prefer to see the rates on a map?

The interactive sales tax by state map shows combined 2026 rates for every US jurisdiction, and sales tax by ZIP code resolves the exact rate for a single address.