Financial calculatorsLearning resources and primary sources

Find the tools, explanations, books, and source material used throughout Dane Does Data Finance.

Independent examples, not endorsements. Dane Does Data is not sponsored by, affiliated with, or endorsed by any company, product, or service listed here. These links are offered as example resources for further research—not as a recommendation that a particular product or service is right for you. Providers, features, fees, rates, and terms can change; review current information directly with each provider before making a decision.

Calculators

Everyday planning

Debt Payoff Calculator

See how long your debts may take to repay and how much interest you may pay.

Long-term investing

VT Compounding Calculator

See how dividend reinvestment turned an earlier VT purchase into more shares.

Everyday planning

Time Funded Calculator

Turn a savings rate into the time required for each phase of the 15/3/2 strategy.

Retirement planning

72(t) SEPP Calculator

Compare the three IRS methods for substantially equal periodic payments from a retirement account.

Retirement planning

Retirement Calculator

Explore how contributions, future income, expenses, withdrawals, and modeled returns may shape retirement.

Everyday planning

Net Worth Calculator

Add assets and liabilities to calculate today’s starting point and identify a useful next milestone.


Account structure

A practical money flow

Give every account one job

See how checking, emergency savings, an employer plan, a Roth IRA, and taxable brokerage can work together—from immediate access to long-term growth.


Quotes

FranklinCovey

Habit 2: Begin With the End in Mind

“Begin With the End in Mind” — define the desired result first, then align today’s decisions with it. Road trips are easier with GPS, and scavenger hunts are easier when you know what is on the list.



External resources

Vanguard

Vanguard Cash Plus Account

An emergency-savings example with direct deposit, bill payments, and advertised PayPal and Venmo compatibility.

Wikipedia

Trinity Study

Background on the historical research commonly associated with the traditional 4% withdrawal rule.

S&P Dow Jones Indices

SPIVA Scorecards

Scorecards comparing actively managed funds with their benchmark indices across time horizons.

Dollarwise

Dollarwise

An example of a service that can automate expense tracking.