PayArith learning library

Understand the numbers behind your compensation

Learn how salary, incentives, benefits, equity, and career decisions work before you compare the final numbers.

30
guides
10
compensation topics
3
learning formats
Total Compensation Is a Stack, Not a Salary Number: an editorial cutaway of cash certainty and attainment, benefits, retirement, and paid time, equity vesting and recurring durability.MethodologyTotal Compensation Is a Stack, Not a Salary NumberA visual anatomy of expected, target, and recurring value.
$100K Employee vs $75/Hour Contractor: A Worked Example: Casey Nguyen reviewing the documents and objects used in the calculation.Worked example$100K Employee vs $75/Hour Contractor: A Worked ExampleRemote, Hybrid, or Office? Price the Arrangement Boundary: a decision crossroads between choose remote or light-hybrid work with lower attendance cost and more location flexibility and choose office-heavy work with a different compensation package and more in-person access despite commute and preparation.Decision guideRemote, Hybrid, or Office? Price the Arrangement Boundary

Three editorial lenses

Choose how you want to learn

Start with the structure, audit a realistic case, or go straight to the choice that needs a decision.

Total Compensation Is a Stack, Not a Salary Number: an editorial cutaway of cash certainty and attainment, benefits, retirement, and paid time, equity vesting and recurring durability.
01

10 guides

Understand the system

See how the inputs, formulas, and assumptions connect before you rely on the result.

Start with this format
$100K Employee vs $75/Hour Contractor: A Worked Example: Casey Nguyen reviewing the documents and objects used in the calculation.
02

10 guides

Follow a real example

Walk through realistic inputs, calculations, and decisions from beginning to end.

Start with this format

A place to begin

One system map, one fully worked case, and one decision boundary. Together they show how the library moves from understanding to action.

The complete library

Ten topics. Three ways into each decision.

Every track begins with the method, puts it to work in a realistic example, and ends at the trade-off you may need to make.

01

Equity and incentives

ESPP Calculator

Learn how payroll deductions become shares, then weigh liquidity, taxes, and employer-stock exposure.

Open the calculator

02

Equity and incentives

Equity Compensation Calculator

Follow a grant from vesting to possible cash and see where exercise cost, dilution, and liquidity change its value.

Open the calculator

03

Pay calculation

Sales Compensation Calculator

Read a commission plan as a calculation: credit, quota, tiers, bonuses, caps, draws, and payout timing.

Open the calculator

04

Compensation & benefits

Total Compensation Calculator

Build a durable compensation picture from cash, benefits, retirement, equity, paid time, and working hours.

Open the calculator

05

Career decisions

Job Offer Comparison Calculator

Put competing offers on one timeline without hiding benefits, equity, time costs, or personal priorities.

Open the calculator

06

Pay comparison

Salary vs Hourly Job Calculator

Give salaried and hourly work the same denominator before comparing annual cash or effective hourly value.

Open the calculator

07

Pay calculation

Overtime & Shift Pay Calculator

Trace schedules, differentials, bonuses, and overtime rules through the regular rate and final gross pay.

Open the calculator

08

Work arrangements

Employee vs Contractor Calculator

Translate wages and billings into comparable economics after benefits, utilization, expenses, tax, and unpaid time.

Open the calculator

09

Career decisions

Relocation Salary Calculator

Treat a move as a household cash-flow decision across housing, income, commute, support, and transition costs.

Open the calculator

10

Work arrangements

Remote vs Office Job Calculator

Price the costs and time attached to remote, hybrid, and office work instead of comparing salary alone.

Open the calculator

From reading to your numbers

Turn what you learned into a comparison

A guide makes the structure visible. A calculator applies that structure to your inputs. The result is still an estimate shaped by the assumptions you choose.

  1. 01LearnName the terms and constraints.
  2. 02ModelEnter your facts and assumptions.
  3. 03CompareRead the difference and its limits.
Explore all calculatorsStart with total compensation