How to Invoice Professionally and Get Paid Faster
Clear invoices, sensible terms, and automated follow-up cut your days-sales-outstanding in half — and stop late payments before they start.
Send the invoice the day work is done. Set clear payment terms. Automate three reminders (3 days before due, day-of, 7 days late). Accept ACH and card. Charge late fees. Your DSO drops by 30%+ without chasing anyone.
What every invoice must include
- Your business name + address + EIN. Required for B2B clients to track 1099 reporting.
- Client's name + billing address. Use the exact entity name on their AP records — or your invoice gets rejected.
- Invoice number. Sequential, no gaps. Required for sales tax reporting in many states.
- Invoice date + due date.Not just "Net 30" — show the actual calendar date the payment is due.
- Itemized line items. Description, quantity, rate, line total. Vague invoices get questioned and delayed.
- Subtotal, tax, total. Sales tax broken out separately where applicable.
- Payment methods + instructions. ACH bank info, card payment link, or check mailing address.
- Late fee policy. Listed up-front, not as a surprise after the due date.
Payment terms — pick the right one
DSO (days sales outstanding) shown is what you can realistically expect.
The follow-up sequence that gets you paid
Automate these — don't rely on remembering.
Invoice sent
Professional tone
Friendly reminder
Casual tone
Payment due today
Direct tone
Past due — late fee added
Firm tone
Then keep going
Continue weekly until paid or you escalate. After 60 days late, switch to phone calls. After 90 days, send a final demand and consider collections.
Tactics that genuinely speed payment
Invoice the day work ships
Every day you delay sending is a day added to your DSO. Build invoicing into project handoff.
Offer a 2% early-pay discount
Net 30 with a 2/10 (2% if paid in 10 days) shifts payment to ~12 days for many clients.
Charge a 1.5%/month late fee
Stated up-front, applied automatically. Most clients pay on time once they see this in your terms.
Accept ACH and card
Wait-on-a-check is a 1990s problem. ACH is free; card costs 2.9% but pays in 1–2 days.
Common invoicing mistakes
Sending invoices weeks after work is done.
Set a rule: invoice goes out the same day the work is delivered. Period.
"Net 30" with no due date listed.
Always print the calendar due date. AP departments file by date, not terms.
No payment link or instructions.
Friction kills speed. One click to pay (card/ACH) beats a check by 14 days on average.
Vague line items like "Consulting — $5,000."
Itemize what was done. Vague invoices get held up "pending review" for weeks.
Stop chasing payments.
Pixelbase invoicing: branded templates, automated reminder sequences, ACH + card payments, late-fee automation, recurring invoices, multi-currency, full bookkeeping sync. Your DSO will thank you.