Business Knowledge Graph & Mind Map — Keel

Semantic Mind Map · 120 Entities · 898 Guides

The self-employed business knowledge graph.

Every job moves through nine connected stages — from pricing the work and sending the quote to collecting payment, scanning receipts, logging mileage, and filing taxes. Click any stage or concept below to trace how rules, tools, and guides connect.

01 · Operational Spine (9 Stages)

Click a job stage to filter the graph

Select any stage in the 9-step business loop to inspect its core guides and connected domain concepts.

02 · Canonical Entity Nodes (DefinedTerm)

91 defined concepts & statutory rules

Every concept node carries an explicit definition, canonical guide URL, and symmetric cross-links across every article that mentions it.

trade 61 guides

Painter

A contractor who prepares and coats interior or exterior surfaces, pricing by wall area and coats rather than floor area.

Canonical guide →
trade 54 guides

Roofer

A contractor who installs and replaces roof coverings, pricing by the square with a pitch factor applied to the footprint.

Canonical guide →
trade 119 guides

Electrician

A licensed trade that installs and repairs electrical systems, pricing by device count and circuits, with permits and inspection almost always required.

Canonical guide →
trade 83 guides

Plumber

A licensed trade that installs and repairs water, waste and gas systems, pricing by fixture count or by linear feet of pipe.

Canonical guide →
trade 14 guides

HVAC Contractor

A trade that installs and services heating and cooling systems, sizing equipment by a Manual J load calculation rather than by floor area.

Canonical guide →
trade 23 guides

Landscaper

A trade that maintains and installs outdoor spaces, pricing recurring work per visit and installation by area or volume.

Canonical guide →
trade 53 guides

Handyman

A generalist trade billing by the hour or in half-day blocks, where travel between jobs is the main profitability risk.

Canonical guide →
trade 18 guides

Tile Contractor

A finish trade pricing ceramic, porcelain, and natural stone installation by square foot plus substrate prep, waterproofing membrane, and layout complexity.

Canonical guide →
trade 12 guides

Auto Detailer

A mobile or shop service business pricing packages by vehicle size class and paint condition, with ceramic coating and paint correction billed as separate tiers.

Canonical guide →
trade 11 guides

Snow Removal Contractor

A seasonal exterior trade pricing residential driveways per push or seasonal contract and commercial lots by trigger depth plus de-icing salt per ton.

Canonical guide →
trade 11 guides

Gutter Contractor

An exterior trade pricing seamless K-style or half-round runs by linear foot, downspout count, mitre corners, and story height.

Canonical guide →
document 898 guides

Invoice

A document issued before payment that requests it, carrying a unique number, issue and due dates, itemised work and payment terms.

Canonical guide →
document 635 guides

Receipt

A document issued after payment that confirms it, recording who was paid, when, how much, for what and by what method.

Canonical guide →
document 776 guides

Estimate

A pre-work document setting out scoped line items and a price, usually with a validity period and conditional allowances for what cannot be seen.

Canonical guide →
document 116 guides

Mileage Log

A contemporaneous record of business trips with date, destination, purpose and distance, required to substantiate a vehicle deduction.

Canonical guide →
document 74 guides

Purchase Order

A buyer-issued reference that accounts payable systems match an invoice against; a missing PO number is a common automatic rejection.

Canonical guide →
document 31 guides

Time and Materials (T&M) Contract

A billing structure that itemises labour hours and material charges separately on the invoice, which in most US states and Canadian provinces shifts retail sales tax onto the billed materials.

Canonical guide →
document 7 guides

Lump-Sum Contract

A contract quoting one single price for the entire job without separating labour and materials; in most jurisdictions the contractor is treated as the consumer of materials and pays tax at the supply house.

Canonical guide →
document 27 guides

Resale Certificate

A state tax document allowing a registered contractor or retailer to buy materials tax-free at wholesale when those items will be resold as separately stated tangible personal property.

Canonical guide →
document 12 guides

Capital Improvement Certificate

Work that permanently adds value to real property or appreciably prolongs its life, which in states like New York and New Jersey exempts the customer from sales tax on installation labour.

Canonical guide →
document 55 guides

Progress Billing

Invoicing a multi-week job in scheduled percentage draws (such as deposit, rough-in, and substantial completion) rather than waiting until final walkthrough.

Canonical guide →
document 60 guides

Retainage

A percentage of each progress invoice (typically 5% to 10%) withheld by a general contractor or owner until final punch-list completion and lien release.

Canonical guide →
document 46 guides

Mechanics Lien

A statutory security claim against real property securing unpaid labour or materials furnished by a contractor, subcontractor, or supplier.

Canonical guide →
document 39 guides

Itemized Invoice

An invoice breaking out individual labour tasks, materials, quantities, unit prices, and tax rules rather than presenting a single flat total.

Canonical guide →
document 9 guides

Proforma Invoice

A preliminary bill of sale sent ahead of work or delivery to commit pricing for customs, deposits, or buyer purchase-order approval before a final tax invoice is issued.

Canonical guide →
document 38 guides

IRS Form W-9

The IRS Request for Taxpayer Identification Number and Certification that a US independent contractor gives a business client before payment so the client can prepare Form 1099-NEC.

Canonical guide →
document 33 guides

IRS Form 1099-NEC

The IRS information return reporting $600 or more in nonemployee compensation paid by a business to an independent contractor during the tax year.

Canonical guide →
software 898 guides

Keel

An iOS app for invoices, receipts and mileage with no bank connection.

Canonical guide →
software 28 guides

Plaid

A financial data aggregator that sits between apps and banks, verifying accounts and, in many setups, retaining ongoing read access to transactions.

Canonical guide →
software 7 guides

Jobber

Cloud field-service management software built for multi-truck dispatch teams, scheduling, and client portals.

Canonical guide →
software 10 guides

Everlance

A subscription mileage and expense tracker for gig and 1099 workers using background GPS and bank feeds.

Canonical guide →
software 4 guides

ServiceM8

Cloud field-service and job-dispatch software for multi-technician trade businesses in Australia, New Zealand, and the UK, priced by monthly job volume.

Canonical guide →
software 6 guides

Tradify

Cloud job-management, quoting, scheduling, and timesheet software for 1-to-5-person trade crews, billed per user per month.

Canonical guide →
software 4 guides

FreeAgent

UK cloud accounting software with Open Banking feeds and direct HMRC Self Assessment and Making Tax Digital filing.

Canonical guide →
software 2 guides

HoneyBook

A client-flow, interactive proposal, contract, and online payment platform for creative freelancers and independent service providers.

Canonical guide →
taxConcept 267 guides

Schedule C

The IRS form on which a sole proprietor reports business profit or loss, whose Line 31 net profit feeds both Schedule 1 and Schedule SE.

Canonical guide →
taxConcept 14 guides

Schedule SE

The IRS form that calculates the 15.3% self-employment tax on 92.35% of net Schedule C profit and generates the 50% above-the-line SE tax deduction.

Canonical guide →
taxConcept 106 guides

Self-Employment Tax

A 15.3% US tax on 92.35% of net self-employment earnings, covering both the employee and employer halves of Social Security and Medicare.

Canonical guide →
taxConcept 3 guides

IRS Commuting Rule

The tax rule that driving between home and a regular place of work is personal non-deductible commuting, unless the home qualifies as the principal place of business.

Canonical guide →
taxConcept 116 guides

GST/HST (Canada)

Canadian federal and harmonised goods and services tax, which a self-employed person must register for once worldwide taxable revenue passes $30,000 CAD over four consecutive quarters.

Canonical guide →
taxConcept 83 guides

Form T2125

The CRA schedule on which a Canadian sole proprietor reports business or professional income and expenses alongside the personal T1 return.

Canonical guide →
taxConcept 12 guides

CRA T4A Slip

The Canadian information slip issued by a payer to report fees for services paid to a self-employed contractor in Box 048.

Canonical guide →
taxConcept 4 guides

Manitoba RST (Contractors)

Manitoba’s 7% Retail Sales Tax, where real-property contractors pay RST on materials as consumers while mechanical and electrical services follow specific taxable rules.

Canonical guide →
taxConcept 35 guides

Ontario 13% HST

Ontario’s 13% Harmonized Sales Tax charged on both contractor labour and materials once the business exceeds the $30,000 CRA small supplier threshold.

Canonical guide →
taxConcept 15 guides

Nova Scotia 14% HST

Nova Scotia’s 14% Harmonized Sales Tax (5% federal GST plus 9% provincial component, reduced from 15% on April 1, 2025) applied to taxable construction labour and materials.

Canonical guide →
taxConcept 64 guides

Australian GST (10%)

Australia’s 10% broad-based Goods and Services Tax on most sales, mandatory for sole traders once GST turnover reaches $75,000 AUD ($0 for ride-sourcing/taxi).

Canonical guide →
taxConcept 20 guides

ATO 12-Week Car Logbook Method

An Australian vehicle deduction method using a continuous 12-week odometer and trip log to establish the business-use percentage applied to actual running costs and decline in value.

Canonical guide →
taxConcept 14 guides

PAYG Instalments

Regular prepayments toward an Australian sole trader’s expected annual income tax bill, reported and paid through the quarterly BAS or instalment notice.

Canonical guide →
taxConcept 44 guides

New Zealand GST (15%)

New Zealand’s 15% Goods and Services Tax administered by Inland Revenue (IRD), compulsory once taxable supplies exceed $60,000 NZD in any 12-month period.

Canonical guide →
taxConcept 5 guides

IRD Depreciation (DV & SL)

New Zealand Inland Revenue rules allowing sole traders to expense assets under the low-value threshold immediately and depreciate tools, vehicles, and equipment using Diminishing Value (DV) or Straight Line (SL) rates.

Canonical guide →
taxConcept 6 guides

IRD Tiered Kilometre Rates

Inland Revenue’s two-tier per-kilometre reimbursement and deduction system: Tier 1 covers fixed and running costs for the first 14,000 km, and Tier 2 covers running costs beyond 14,000 km.

Canonical guide →
taxConcept 37 guides

Self Assessment

The HMRC system through which a UK sole trader reports income, with a balancing payment and two payments on account rather than quarterly instalments.

Canonical guide →
taxConcept 50 guides

IR3

The New Zealand individual income tax return on which self-employed income is reported to Inland Revenue.

Canonical guide →
taxConcept 11 guides

Form 11

The Irish self-assessment return filed through ROS by a chargeable person, covering income tax with USC and PRSI.

Canonical guide →
taxConcept 77 guides

ABN

The Australian Business Number a sole trader registers for free through the Australian Business Register before invoicing.

Canonical guide →
taxConcept 2 guides

Arizona Transaction Privilege Tax (TPT)

Arizona’s gross receipts tax on vendors, where MRRA (maintenance, repair, replacement, alteration) contractors pay tax on materials at purchase while prime contractors deduct 35% and remit TPT on 65% of gross receipts.

Canonical guide →
taxConcept 9 guides

UK 20% / 30% CIS Deduction Calculator

Calculating UK Construction Industry Scheme tax withheld at source (20% registered or 30% unregistered) exclusively on net labour plus subcontractor travel, while keeping direct materials and VAT 100% exempt from CIS withholding.

Canonical guide →
unit 5 guides

Square (roofing)

A roofing unit equal to 100 square feet of roof surface, measured after applying the pitch factor rather than on the building footprint.

Canonical guide →
unit 19 guides

Pitch Factor

A multiplier converting a roof footprint to actual surface area, from about 1.054 at 4/12 to 1.414 at 12/12; omitting it under-measures the roof.

Canonical guide →
unit 187 guides

Linear Foot

A length-based pricing unit used for trim, fencing, ductwork and gutters, where the price often conceals the post or fitting count driving labour.

Canonical guide →
unit 24 guides

Drywall Finish Level

A drywall finish standard from Level 0 to Level 5, where Level 4 suits flat paint and Level 5 is required for gloss or critical lighting.

Canonical guide →
unit 3 guides

Board Foot

A lumber volume unit equal to 144 cubic inches (1 inch thick by 12 inches wide by 12 inches long) used to price rough and finish hardwood.

Canonical guide →
unit 0 guides

Fully Burdened Labour Rate

The true hourly cost of a worker or owner-operator after adding payroll taxes, workers’ compensation insurance, unbillable travel, callbacks, and overhead to the base wage.

Canonical guide →
unit 153 guides

Markup vs. Gross Margin

Markup is profit divided by cost while gross margin is profit divided by selling price; a 50% markup equals a 33.3% gross margin, and confusing the two underprices jobs.

Canonical guide →
currency 216 guides

US Dollar

The official currency of the United States used for IRS tax reporting and US contractor invoicing.

Canonical guide →
currency 11 guides

Euro

The official currency of Ireland and the Eurozone used for Irish Revenue Form 11 reporting.

Canonical guide →

03 · Sequential Job Stages

Guides mapped by operational stage

Follow the natural order of a job from pricing and quoting through invoicing, expenses, mileage, and year-end taxes.

Stage 01 → Stage 02 (The estimate)

Pricing the job: What should I charge?

Building a number from your own costs, not a guess.

Explore all 52 pricing the job guides →

Stage 02 → Stage 03 (The invoice)

The estimate: How do I quote it?

Putting the number in front of the customer.

Explore all 133 the estimate guides →

Stage 03 → Stage 04 (Getting paid)

The invoice: How do I bill for it?

Turning agreed work into a document that gets paid.

Explore all 286 the invoice guides →

Stage 04 → Stage 05 (Receipts)

Getting paid: How do I actually get paid?

Terms, chasing, and what to do when it is late.

Explore all 122 getting paid guides →

Stage 05 → Stage 06 (Expenses)

Receipts: What do I keep?

Proof of what you spent, in a form that survives.

Explore all 3 receipts guides →

Stage 06 → Stage 07 (Mileage)

Expenses: What can I deduct?

Turning spend into a legitimate deduction.

Explore all 30 expenses guides →

Stage 07 → Stage 08 (Tax)

Mileage: How do I claim my driving?

The log, the rate, and what counts as business travel.

Explore all 22 mileage guides →

Stage 08 → Stage 09 (Year end)

Tax: What do I owe, and when?

The calculation, the deadlines, the return.

Explore all 163 tax guides →

Stage 09 · Annual Close

Year end: How do I hand it to my accountant?

Pulling the year together for your accountant.

Explore all 1 year end guides →

Put the whole job flow in your pocket.

Keel keeps your quotes, jobs, PDF invoices, receipts, and mileage connected in one calm iPhone app — with no bank login.

Download on theApp Store