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Source: https://incomerefinery.com/articles/how-to-track-passive-income/
Description: Track passive income step by step: set a target from your spending, turn dividends, rent and interest into one net monthly figure, and measure the gap.
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**To track passive income toward financial independence**, set a monthly income target equal to your monthly spending, turn every income stream into a net monthly figure in one currency, add them up, and measure the gap to your target each month.

By Darren C · 14 October 2026

# How to track passive income, *step by step*

Financial independence comes down to one comparison: the income your assets pay you each month against what you spend each month. This guide shows how to measure the first number honestly, across dividends, rent, bonds and savings, and how to watch the gap close, with worked figures at every step.

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01 · The short answer

## The short answer

Tracking passive income toward financial independence takes seven steps:

1. **Set a target** equal to your monthly spending.
2. **List every stream** that pays you without your time: dividends, REIT distributions, bond coupons, savings interest, net rent and the like.
3. **Turn each one into a net monthly figure** : annual income after tax withheld at source and after property costs, divided by 12.
4. **Convert everything to one currency** before you add it up.
5. **Check the calendar** : lay the year out month by month to find the thin months.
6. **Divide the total by your target** to get a percentage, note the gap in money terms, and record the figure once a month.
7. **Project the date** the gap could close, from new money, yield, income growth and reinvestment.

The rest of this guide works through each step with one example portfolio, so you can check every number.

02 · The idea

## Why track income, not net worth

The best-known way to plan for financial independence counts capital. The [4% rule](https://www.financialplanningassociation.org/sites/default/files/2021-04/MAR04%20Determining%20Withdrawal%20Rates%20Using%20Historical%20Data.pdf), from William Bengen's 1994 study of US market history, says you can draw about 4% of your portfolio in the first year of retirement and raise the amount with inflation after that. Turned around, it sets your target portfolio at about 25 times your annual spending.

An income approach asks a different question: does the cash your assets already pay cover your bills? You do not plan to sell assets to fund your spending. You live on what they pay out.

The two approaches suit different investors, and many people watch both. Income has three practical strengths as a progress measure:

- **It moves less than prices.** A market fall can wipe 20% off a portfolio's value in a month while most of its dividends keep arriving. Your progress figure stops swinging with the news.
- **It uses the same unit as your bills.** You pay rent and groceries monthly. A monthly income figure compares straight against them, with no withdrawal-rate assumption in between.
- **It counts things a portfolio value misses.** Net rent from a property, interest from a savings account and a pension that has started paying all count toward the same target.

Income is not risk-free. Companies cut dividends, tenants leave, and interest rates fall. That is why the method below counts what you can rely on, net of costs, and checks it monthly.

03 · Step 1

## Set your target from spending

Your financial independence target is the monthly passive income that would cover your monthly spending. Add up a typical month: housing, food, transport, insurance, utilities, and a fair monthly share of annual costs such as holidays and car servicing. Use what you actually spend, from bank statements, not what you hope to spend.

Many people in the FIRE community also set a lower and a higher marker. Lean FI covers a trimmed-down budget. Fat FI covers a comfortable one with room to spare. Income Refinery Pro sets Lean FI at 70% of spending and Fat FI at 150% by default, and you can change both.

Worked example · monthly spending of $4,000 Lean FI = $4,000 × 70% = $2,800 a month  
FI = $4,000 × 100% = $4,000 a month  
Fat FI = $4,000 × 150% = $6,000 a month

If you pay tax on this income when it reaches you, either set the target high enough to cover that tax or track income after tax. Pick one and stick to it. Mixing gross income with an after-tax budget makes progress look better than it is.

04 · Step 2

## List every income stream

Passive income, for this purpose, is cash that arrives without you trading time for it. Write down every source, even the small ones. Small streams add up, and a complete list stops you from guessing.

Counts toward the target Dividends from shares and ETFs  
REIT and trust distributions  
Bond and fixed-deposit coupons  
Savings and money-market interest  
Net rental income (rent minus property costs)  
Pensions and annuities already in payment  
Royalties and other recurring payments  
  
Leave out Salary, freelance and side-business income that needs your time  
Capital gains, unless you have a fixed rule for selling  
One-off special dividends  
Income you expect but have not secured

Capital gains deserve a word. If your plan includes selling a set percentage of your holdings each year, you can track that as a stream. Most income investors leave gains out, because a gain only becomes cash when you sell, and the amount depends on the price on the day.

05 · Step 3

## Turn each payment into a net monthly figure

Streams pay on different schedules: monthly, quarterly, twice a year or once a year. To add them up, convert each one to the same unit. The reliable method: work out the annual amount, take off anything you will not receive, then divide by 12. The result is your net monthly passive income: what a stream pays you each month after tax withheld at source and after the costs of earning it.

The method Annual income = payment per unit × units × payments per year  
Net income = annual income − tax withheld at source − costs  
Monthly figure = net income ÷ 12

Here is the example portfolio used through the rest of this guide. It belongs to an investor whose base currency is the US dollar.

US dividend stock · 400 shares, $0.55 a quarter, 30% withheld Annual = 400 × $0.55 × 4 = $880  
Net = $880 × (1 − 0.30) = $616  
Monthly = $616 ÷ 12 = $51.33  
  
Rental flat · $2,400 rent, $700 costs a month Monthly = $2,400 − $700 = $1,700.00  
  
Savings account · $25,000 at 3.4% a year Annual = $25,000 × 3.4% = $850  
Monthly = $850 ÷ 12 = $70.83

Two details catch people out. First, withholding: many countries tax dividends before the money leaves, and the rate depends on where you live, where the fund is domiciled, and any tax treaty between the two. For US-source dividends, the [IRS treaty tables](https://www.irs.gov/individuals/international-taxpayers/tax-treaty-tables) point to the rate for each country. Use the rate that actually applies to you. Second, rent: count property tax, insurance, maintenance, management fees and a fair allowance for empty months. In the example above, costs alone take 29% of the rent, before any empty months.

06 · Step 4

## Put everything in one currency

If you hold a Singapore REIT and a US stock, you earn in two currencies. You cannot add S$40 to US$50 and call it 90 of anything. Convert each stream into your base currency first, usually the currency you spend in, then add.

Singapore REIT · 6,000 units, S$0.026 a quarter Annual (SGD) = 6,000 × S$0.026 × 4 = S$624  
Annual (USD) = S$624 ÷ 1.30 = $480  
Monthly = $480 ÷ 12 = $40.00  
  
Exchange rate is illustrative: US$1 = S$1.30.

Exchange rates move, so the same foreign payment buys more or less of your base currency over time. Refresh your rates when you update your figures. Income Refinery supports 21 currencies, fetches live rates for 18 of them, and converts every stream for you, but the principle holds in a spreadsheet too.

Now add the four streams together:

Total passive income $51.33 + $40.00 + $1,700.00 + $70.83 = $1,862.17 a month

07 · Step 5

## Check the calendar, not just the average

$1,862.17 is a monthly average. Real months differ, because quarterly payers bunch into certain months. Lay the year out month by month and you see where the gaps fall.

The example portfolio, month by month Jan, Apr, Jul, Oct = $1,700.00 + $70.83 = $1,770.83  
Feb, May, Aug, Nov = $1,770.83 + $120.00 (REIT) = $1,890.83  
Mar, Jun, Sep, Dec = $1,770.83 + $154.00 (stock) = $1,924.83  
  
Average = $1,862.17, thinnest month $1,770.83

Monthly passive income of the example portfolio against a $4,000 target. Every month falls between $1,770.83 (January, April, July and October) and $1,924.83 (March, June, September and December).

Here the rent keeps the months even. Take the rent away and the picture changes: the same holdings pay $70.83 in January and $224.83 in March. A portfolio of quarterly payers can look healthy on average and still leave you short four months a year.

This is the question that started Income Refinery for me. I kept asking which months were short and what I would need to buy to fill them. A 12-month calendar answers both at a glance. Once you have one, each new purchase becomes a choice about which months to fill, not only how much yield to add.

08 · Step 6

## Measure progress every month

Two numbers tell you where you stand: the percentage of your target your income covers, and the gap in money terms.

The example portfolio against a $4,000 target Progress = $1,862.17 ÷ $4,000 = 46.6%  
Gap = $4,000 − $1,862.17 = $2,137.83 a month  
  
Against Lean FI: $1,862.17 ÷ $2,800 = 66.5%

The percentage motivates. The gap in money tells you what to do next: you need another $2,137.83 a month of net income. At a 5.5% net yield, each $1,000 invested adds about $4.58 a month, so the gap points to roughly $466,000 of new capital, less if income grows or you reinvest along the way.

Then keep a record. Once a month, write down the date, your monthly passive income, and if you like your portfolio value. The first of the month works well. After six months you have a trend line. After two years you can see whether your income grows faster than your spending.

If you track over several years, adjust for inflation. $2,000 a month today buys less in five years than it does now. Compare past figures in today's money, or raise your target each year by the inflation rate, so progress reflects what your income can actually buy.

The free Income Refinery app shows both numbers, the percentage and the gap, as soon as you enter your holdings, rent and savings and set a target. [Try it free](https://incomerefinery.com/app/).

09 · Step 7

## Project when you could get there

Once you know where you stand, you can estimate when the gap might close. Three inputs drive the answer: how much new money you invest each month, the yield it earns, and how fast your existing income grows. A fourth choice matters as much as any of them: whether you reinvest the passive income you receive or spend it.

A simple monthly projection Month 1 income = starting income × (1 + monthly growth)  
  
New money invested = monthly capital + (this month's income, if you reinvest)  
Next month's income =  
(this month's income + new money invested × yield ÷ 12)  
× (1 + monthly growth)  
  
Repeat until income reaches the target.

Apply it to the example portfolio. Start at $1,862.17 a month, invest $1,500 of new money each month at a 5.5% yield, and assume all income grows 2% a year, which is about 0.165% a month. With reinvestment on, the investor lives on their salary and puts every dollar of passive income back to work.

*Time to reach each target, example portfolio*

| Target | Reinvest on | Reinvest off |
| --- | --- | --- |
| Lean FI ($2,800) | 3 years 9 months | 7 years 5 months |
| FI ($4,000) | 7 years 5 months | 15 years 5 months |
| Fat FI ($6,000) | 11 years 10 months | 26 years 6 months |

In this example, reinvesting cuts the time to every target by roughly half, because each payment buys more income. Treat these as projections from stated assumptions, not forecasts. Yields change, dividends get cut, and the rent on a real flat does not rise by exactly 2% a year. Run the numbers again whenever an assumption changes, and look at a cautious case alongside the hopeful one.

The [methodology article](https://incomerefinery.com/articles/yield-on-cost-methodology/#forecast-reinvestment) explains how Income Refinery Pro's forecast handles reinvestment, separate growth rates for dividends, rent and other income, and three scenarios side by side.

10 · Markers

## Milestones on the way: Lean, FI, Fat and Coast

A target years away can feel abstract. Milestones break it into stages you can reach sooner. Income Refinery Pro marks all four on your dashboard:

- **Lean FI:** passive income covers a trimmed budget, 70% of spending by default. Losing your job stops being a crisis.
- **FI:** passive income covers your full monthly spending.
- **Fat FI:** passive income covers 150% of spending by default, enough for a cushion, rising costs and some luxury.
- **Coast FI:** in Income Refinery's income-based version, the point from which your current passive income would reach your FI target with no new money added, through reinvestment and income growth alone.

The conventional Coast FIRE definition works differently: it asks whether your invested savings would grow into a full retirement portfolio by a chosen retirement age without further contributions. Income Refinery keeps the name but measures it in monthly income, to match the rest of the method. In the example above, with no new money, reinvestment on and 2% growth, the $1,862.17 a month would reach $4,000 in about 10 years 4 months.

For the formulas behind each type, a conventional Coast FIRE calculation, Barista FIRE, and how long each goal takes for this example portfolio, see [Lean FIRE vs Coast FIRE vs Fat FIRE: Your Monthly Number](https://incomerefinery.com/articles/lean-fire-vs-coast-fire-vs-fat-fire/).

11 · Pitfalls

## Mistakes that inflate the number

Most tracking errors push the figure up, which feels good and misleads. Check for these:

- **Counting gross dividends.** If 30% is withheld, a $1,000 dividend puts $700 in your account.
- **Counting gross rent.** Rent minus costs and empty months is the figure that reaches you.
- **Using your best month.** Quote the average or the thinnest month, never the peak.
- **Adding currencies without converting.** The total means nothing until every stream is in one currency.
- **Trusting a yield that looks too good.** A very high yield often means the market expects a cut. Watch each holding's recent payments, and treat a falling payment as a warning before it shows up in your total.
- **Counting one-off payments.** Special dividends and windfalls do not repeat.
- **Never updating.** A figure from last year tells you about last year. Refresh payments and rates at least monthly.

12 · Tools

## Passive income tracker: spreadsheet, broker app or dedicated tool

You can do everything above in a spreadsheet, and many people do. Three kinds of tool cover most of the rest:

*Ways to track passive income*

| Option | Strength | Limit |
| --- | --- | --- |
| Spreadsheet | Free, private, and does exactly what you tell it. | You type every payment, maintain exchange rates and rebuild the calendar when something changes. |
| Broker app | Shows the dividends from that one broker. | Rarely knows about your rental flat, your savings at another bank or holdings elsewhere, so it cannot give you a total. |
| Dedicated dividend tracker (Sharesight, Snowball Analytics, Simply Safe Dividends) | A strong job for shares, with broker sync, tax reports or dividend safety scores. | Subscription pricing. Few treat rental income as more than a custom asset. |

I built Income Refinery for the method on this page. It converts dividends, rent, bonds, savings and other streams into one monthly figure in your base currency, lays out the 12-month calendar, and shows your progress against a target. It runs in your browser, needs no account, and keeps your saved portfolio on your device. It does not log in to your broker: you type holdings or import a CSV or Excel file. The [free version](https://incomerefinery.com/app/) covers 10 holdings, one property and three other streams. The [user guide](https://incomerefinery.com/guide/) walks through setup, and the [comparison page](https://incomerefinery.com/alternatives/) sets out how it stacks up against the alternatives, including when another tool suits you better.

13 · FAQ

## Common questions

### What counts as passive income for financial independence?

Cash that arrives without you trading time for it: dividends, REIT distributions, bond coupons, savings interest, net rental income, pensions and annuities in payment, and royalties. Salary, freelance work and capital gains you have not taken stay out unless you have a fixed rule for them.

### Should I track dividends before or after withholding tax?

After. Withholding tax comes off before the money reaches your account, so the net figure is the one that pays your bills. Use the withholding rate that applies to you, which depends on your country of residence, the fund's domicile and any tax treaty.

### How do I turn quarterly or annual dividends into a monthly figure?

Work out the annual amount (payment per share × shares × payments per year), take off any tax withheld, and divide by 12. 400 shares paying $0.55 a quarter with 30% withheld gives $616 a year, or $51.33 a month.

### How much passive income do I need to retire?

Enough to cover your monthly spending, which this guide treats as your FI target. If you spend $4,000 a month, you need $4,000 a month of net passive income. Income Refinery Pro marks Lean FI at 70% of spending and Fat FI at 150% by default.

### How is tracking income different from the 4% rule?

The 4% rule sizes a portfolio you draw down: about 25 times your annual spending. Income tracking asks whether the cash your assets already pay covers your spending, without selling anything. Many investors watch both.

### Can I track passive income in a spreadsheet?

Yes. List each stream, convert it to a net monthly figure in one currency, add a monthly calendar, and record the total each month. The work is in the upkeep: payment updates, exchange rates and a calendar that needs rebuilding as holdings change.

### Is there a free passive income tracker that covers rent as well as dividends?

Income Refinery is free to use for up to 10 holdings, one rental property and three other income streams. It runs in your browser with no account, converts 21 currencies, and keeps your saved portfolio on your device.

D

Darren C

Creator, Income Refinery

## Find your *own number*

Add your holdings, rent and savings to Income Refinery, set your target, and see your monthly passive income and the gap in a few minutes. Free, with no account.

[Try Income Refinery Free](https://incomerefinery.com/app/) [Read the User Guide](https://incomerefinery.com/guide/)

No account needed · Your saved portfolio stays local · Optional market lookups and FX updates may contact external data services.