I’m working part time and I’m wanting to start a business part time providing lawn care, though I’m unsure if owning and working a business will affect the money I earn working part time?
Getting into your own small business will impact on your tax at the end of the year, but shouldn't impact the take home pay from your part-time gig. Depending on the income you earn from part-time wage, you will undoubtedly need to put aside some of the business earnings for tax
Best plan - have a quick sit down with your accountant, set up decent record keeping (Xero, MYOB etc.) to track your incomes and expenses, and a little further down the track you'll be able to get a really clear picture of your tax obligations.
For a starting point, put aside 20% of your turnover, but please see your accountant sooner rather than later to make sure you wont have any nasty surprises.