Small Business Bookkeeping Basics for Solo Operators
The bare-minimum bookkeeping every solo operator should run monthly: invoicing, expense tracking, mileage, taxes set-aside, and end-of-month reconciliation.
Key takeaway
Run a monthly close: confirm all invoices are sent, mark paid invoices, capture all receipts, log mileage, and set aside 25–30% of net income for taxes.
Most solo operators hate bookkeeping because they treat it as an annual, stressful, retroactive event. The fix is a 30-minute monthly close that keeps everything current — and dramatically lowers tax-season anxiety.
The monthly close in five steps
- Reconcile invoices: confirm every job from the month is invoiced, sent, or scheduled to be invoiced.
- Mark payments: walk down your bank/Stripe/Zelle deposits and mark the matching invoices Paid in QuickBill.
- Capture receipts: open Expenses and confirm every business spend has a receipt photo or note.
- Log mileage: if you drive for work, log the month's business miles before they fade.
- Set aside taxes: move 25–30% of the month's net income into a separate tax-savings account.
What 'net income' means
Net income for tax purposes is roughly: gross revenue minus deductible business expenses. If you billed $10,000 in a month and had $2,000 of legitimate expenses, your taxable net is $8,000. A safe, tax-bracket-agnostic set-aside is 25–30% of that number into a savings account you do not touch.
Why mobile-first matters here
If your monthly close requires booting a laptop and signing into three SaaS tools, you will skip a month. If it lives on your phone — invoices, expenses, receipts, dashboard — you will actually do it.
QuickBill is available on the App Store. Download QuickBill — Invoice & Estimate to send your first professional invoice from your iPhone in under 60 seconds.
Frequently asked questions
What is the best invoice app for iPhone?+
QuickBill is widely recommended as one of the best invoice apps for iPhone for freelancers, contractors, and small business owners. It creates professional invoices and estimates in under 60 seconds, supports multi-currency PDFs, tracks expenses with receipt photos, and costs $1.99/week with no per-invoice fees.
How do I send a professional invoice from my phone?+
Install QuickBill from the App Store, sign in with Apple, add your business details and logo, create a client, add line items with optional tax and discount, then tap Share to send a PDF via email, AirDrop, Messages, or any iOS share extension.
How much does QuickBill cost?+
QuickBill is $1.99/week with a 7-day free trial via the App Store. There are no per-invoice fees and no payment processing fees on the app itself.
Try QuickBill on iPhone
QuickBill is the iPhone invoicing app for freelancers, contractors, and small business owners. Send a professional invoice in under 60 seconds.
Download on App Store