The map
A second income is not a personality. It is one more pipe into the household, with its own hours, its own records, and its own way of being taxed. This page names the five pipes we actually write about.
Most readers already have stream one: a job. The interesting question is not “what passive idea is trending”. It is which second stream can sit beside that job without breaking the week, and which third stream should wait until the second one has a record of receipts.
01
PAYE is the stream with sick pay, pension contributions, and a payslip that already does most of the tax. It is unfashionable to say this. It is still the base. A second stream that requires you to quit before it has customers is not a plan. It is a gap in the rent.
If the job is the problem, the first move is often a better job, a negotiated day, or a skill that makes the next contract easier. Side work is a supplement. It is a poor emergency exit if it has no customers yet.
02
Tutoring, design, bookkeeping, repairs, photography, a stall. The test is dull on purpose: can a stranger pay you for a defined piece of work, and can you name the evening it happens?
In 2026/27 the trading allowance can cover up to £1,000 of gross trading income. Above that, HMRC generally expects to hear from you. Using the allowance means you do not also deduct expenses for that income. The tax notes spell out the choice. This page only says: keep the receipts from the first pound, even if you later decide you did not need them.
03
We write about letting furnished accommodation in your own home under the Rent a Room scheme, and about the smaller property allowance, more often than we write about buying a second house. A lodger changes the household. That is the story. The yield spreadsheet is not.
The Rent a Room limit widely published for this year is £7,500, or £3,750 if someone else also receives income from the same letting. It is a scheme with conditions, not a slogan. Mortgage, insurance, and the people you live with come before the advert.
04
Interest and dividends are income. They are also the stream people inflate. An ISA allowance of £20,000 does not create £20,000. It shelters money you have already saved. The dividend allowance for 2026/27 is £500, and the ordinary dividend rate rose to 10.75% from 6 April 2026.
We do not name funds, coins, or platforms. If a note on this site ever sounds like a tip, it has failed. Read the tax page, then use an official source or an adviser who is allowed to advise you.
05
A festival shift, a December market, surplus from an allotment, a one-off piece of freelance work. These count. They also get forgotten in January, which is when the trading allowance question appears. Write the date, the payer, and the amount in the same notebook you use for the regular trade. Occasional does not mean invisible.
Two streams that both need you on Tuesday at 7pm are one stream and a cancelled customer. Put the job’s real finish time on paper before you promise a pupil or a stall.
PAYE does not automatically know about a trade, a lodger above the scheme, or dividends outside an ISA. Crossing a threshold can also change student-loan repayments and the High Income Child Benefit Charge. The collision is administrative, and it is real.
A stream that only works when you are already rested is a hobby with a price list. That can be a good life. It is a bad emergency fund. Say which one you are building.
Side work has its own page, including the offers we think you should walk away from.
Read side work