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What Independent Income Costs: a Trading Desk of One and a Paid Newsletter

Trading your own money and writing a paid newsletter both look free to start. Both carry costs that arrive before revenue, so here is the arithmetic, with every input stated.

By Surojit Chakraverti, founder of L3VLUP and an investor running a long-short healthcare and technology equities strategy.

Updated 30 October 20265 min read

Two businesses that look free

Two independent businesses attract people with a finance background: trading an account of their own, and writing a paid newsletter. Each needs a laptop and an idea, which makes them look free to start. Each also has fixed costs that arrive before the first revenue, and a variance in outcomes that does not average out for a long time.

This article does arithmetic on stated assumptions. Every figure is an illustration, not a forecast, and none is a claim about what anyone earns. The point is to show the shape of the economics so that you can replace the inputs with your own.

Trading your own account, costed

Suppose $50,000 of capital. The fixed costs of doing it properly are market data and a trading platform, some analysis tools, an accountant for the tax return and the hardware and connection. Take $3,000 a year for all of it. That is 6.0 per cent of the capital before a single trade is placed.

Execution costs sit on top and scale with activity. A trader who makes 400 round trips a year at an all-in $8 each, covering commission, fees and the spread, pays $3,200, another 6.4 per cent. The total is $6,200, or 12.4 per cent of the account. The strategy has to earn that much gross before it earns anything net, and it has to do so in competition with whatever the same money would earn in cash, which carries no trading costs.

The same $3,000 of fixed costs on $5 million of capital is 0.06 per cent, which is why professional desks do not worry about their data bill. The economics of a trading business are the economics of scale, and a small account carries a handicap that skill has to overcome. Two items have no price in the arithmetic: the hours, and the capacity to sit through a losing run. Tax treatment depends on the country and on whether the activity counts as trading or investing, so take advice on it.

A $50,000 account, illustrative annual costs
LineAssumptionAnnual costShare of capital
Data, platform, tools, accountant, hardwareFixed$3,0006.0%
Execution400 round trips at $8 all-in$3,2006.4%
Total to break even before returns$6,20012.4%
Illustration: a $50,000 account, costs a yearFixed$3,000, 6.0%Execution$3,200, 6.4%Fixed: data, platform, tools, accountant, hardwareExecution: 400 round trips at $8 all-in$6,200 is 12.4% of the account. On $5 million, $3,000 is 0.06%.
The strategy has to earn the whole bar gross before it earns anything net, and the same $3,000 is a rounding error for a desk with $5 million.
Read as a table
LineAnnual costShare of capital
Fixed: data, platform, tools, accountant, hardware$3,0006.0%
Execution: 400 round trips at $8 all-in$3,2006.4%
Total before returns$6,20012.4%

A funded-trader challenge, costed

The alternative sold to retail traders is an evaluation. You pay a fee for a trial account, reach a profit target without breaching loss limits inside a time limit, and if you pass you are given a funded account and keep a share of the profits. Published rule sets vary and change often. Shapes you will see include a profit target in the region of 8 to 10 per cent, a daily loss limit of about 4 to 5 per cent and an overall drawdown limit of about 8 to 12 per cent. Read the current terms of any programme before paying.

The cost that matters is the expected fee per funded account, which is the fee divided by the probability of passing. With a $500 fee, a 10 per cent pass rate means $5,000 of fees per funded account, a 5 per cent rate means $10,000, and a 20 per cent rate means $2,500. Pass rates are not audited or uniformly published, so the formula is the useful part. If the profit split is 80 per cent, recovering $5,000 of fees takes $6,250 of gross profit, which is 6.25 per cent on a $100,000 account, achieved inside the loss limits.

Two questions are worth asking of any programme. The first is whether the funded account trades live capital or in simulation, which the terms should state. The second is where the programme earns its money. A firm that is paid whether or not you pass has a different incentive from one that is paid only when you are profitable, and that is a fact about the business model, not an accusation. A challenge caps your loss at the fee. It is a capped-loss attempt at a trading career, not an income plan.

Illustration: expected fees per funded account, $500 fee5% pass$10,00010% pass$5,00020% pass$2,500At an 80% profit split, $5,000 of fees takes $6,250 of grossprofit: 6.25% on a $100,000 account, inside the loss limits.
The useful part is the formula, the fee divided by the probability of passing, because pass rates are not audited or uniformly published.
Read as a table
Pass rateExpected fees per funded account
5%$10,000
10%$5,000
20%$2,500

A paid newsletter, costed

Take 1,000 free subscribers and a price of $100 a year. The share who pay is the number the whole business turns on, and it varies widely between publications. At 2, 5 and 10 per cent, the paying readers are 20, 50 and 100, and the gross revenue is $2,000, $5,000 and $10,000. Those conversion rates are illustrations, not benchmarks, and the only reliable figure is your own after a few months of data.

Costs come off the top. Payment processors commonly take about 3 per cent plus a fixed fee per charge, and some platforms add up to 10 per cent of paid revenue while others charge a flat monthly fee. Assuming a cautious 13 per cent in total leaves $1,740, $4,350 and $8,700. Then there is the writing. Six hours for a weekly issue is 300 hours a year, so those three cases pay $5.80, $14.50 and $29.00 an hour before tools and tax.

Per 1,000 free subscribers at $100 a year, illustrative
Free to paidPaying readersGross a yearAfter 13% in feesPer hour at 300 hours
2%20$2,000$1,740$5.80
5%50$5,000$4,350$14.50
10%100$10,000$8,700$29.00
Illustration: per 1,000 free subscribers at $100 a year2% pay: 20 readers, $2,000 gross$1,740$5.80 an hour after fees, at 300 hours a year5% pay: 50 readers, $5,000 gross$4,350$14.50 an hour after fees, at 300 hours a year10% pay: 100 readers, $10,000 gross$8,700$29.00 an hour after fees, at 300 hours a year
Conversion moves the hourly figure more than anything else, and the only reliable conversion rate is your own after a few months of data.
Read as a table
Free to paidPaying readersGross a yearAfter 13% in feesPer hour at 300 hours
2%20$2,000$1,740$5.80
5%50$5,000$4,350$14.50
10%100$10,000$8,700$29.00

What scale and churn do to it

The same 5 per cent at 10,000 free subscribers yields $43,500 after fees, or $145 an hour on the same 300 hours. The business is mostly a scale problem, and the work that determines scale is finding readers, which takes time the hourly figure ignores. Churn compounds the difficulty. If 30 per cent of paying readers leave each year, 50 paying readers means 15 replacements a year just to stand still.

One regulatory point belongs in the plan. Charging for specific views on securities may engage financial promotion or investment advice rules, depending on what you write and where you and your readers are. Take advice before you charge for anything that reads as a recommendation.

What the two have in common

Both have fixed costs before revenue, both are mostly scale problems, and both pay an hourly rate that starts low and rises only when the base grows. Before starting either, write down the annual cost, the break-even level, the hours a week you will spend and the amount of money and time you are willing to lose. Treat it as a side project with a capped budget until the evidence says otherwise.

There is a career-shaped version of each. A trading seat at a firm gives you the capital and infrastructure that an individual lacks, and the guides below set out how those seats are hired. A newsletter is also a body of work, and a consistent record of analysis is a credential for roles in research and investing even if it never earns anything.

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