Contact BillMyRate
By Andrew James Flores, Nathan Management · Updated September 23, 2026 · Editorial Standards
Write to BillMyRate when a calculator result looks wrong, a guide cites a figure or rule that has changed, part of the site is hard to use with your device or assistive technology, or you have a question about privacy. Suggestions for the calculator and ideas for new guides are welcome too.
Email: nathanmanagement@agentmail.to
Messages are read by Nathan Management. Replies usually within three business days.
BillMyRate is published by Nathan Management, a California-based business owned and operated by Andrew James Flores. Andrew prices and invoices his own service work and built the calculator to replace guesswork with a formula. The About page explains who runs the site and why it exists, and Editorial Standards explains how pages are sourced, checked and corrected.
What to write about, and what to include
The fastest replies go to messages that arrive with everything needed to reproduce the question. Use this table as a checklist before you send.
| Reason for writing | Include | What happens next |
|---|---|---|
| A calculator result looks wrong | The page address; every input exactly as you entered it; the result shown; the result you expected and how you worked it out; your browser and device, and whether refreshing changed anything. | Your inputs are re-run through the published formula. The reply either names the input that explains the number or confirms an error, which is then fixed on the site. |
| A guide figure, rule or link is out of date | The guide's address; the exact sentence; a link to the primary source, such as the IRS or Social Security Administration page, and the date you checked it. | The primary source is checked. A confirmed correction changes the page and its “Updated” date. |
| An accessibility barrier | The page; what you were trying to do; your browser, device and any assistive technology, such as a screen reader, a zoom level or keyboard-only navigation. | The steps are repeated with a matching setup, and the reply says what will change. |
| A privacy question or request | What you are asking about; if it concerns an earlier message, the address you sent it from. | Handled as set out in the privacy policy. |
| A suggestion for the calculator or a new guide | The decision you were trying to make and the number or explanation that would have helped. | Suggestions are collected and weighed when the calculator and guides are next revised. |
Check a surprising result in two minutes
Many results that look wrong come from a single input. Before you write, try rebuilding the number by hand. The calculator uses one formula for every hourly floor it shows:
hourly floor = (personal income goal + business operating costs + personal benefits budget) ÷ (share of invoices collected × (1 − fee share)) ÷ (billable hours per working week × (52 − weeks with no billing))
Here is that formula applied to the calculator's starting values, assumed here as an illustration.
| Step | Fields used | Result |
|---|---|---|
| 1. Working weeks | 52 − Weeks with no billing each year = 52 − 4 | 48 weeks |
| 2. Billable hours in the year | Billable hours per working week × 48 weeks = 25 × 48 | 1,200 hours |
| 3. Share of invoices kept | Invoices eventually collected (%) × (1 − Fees on collected payments (%)) = 100% × (1 − 0%) | 1.00 |
| 4. Amount to cover | Personal income goal, before taxes ($/year) + Business operating costs ($/year) + Personal benefits budget ($/year) = $75,000 + $5,000 + $0 | $80,000.00 |
| 5. Amount to invoice | $80,000.00 ÷ 1.00 | $80,000.00 |
| 6. Hourly floor | $80,000.00 ÷ 1,200 hours = $66.666…, rounded up to the next cent | $66.67 |
Whatever inputs you use, the calculator always rounds the floor up, never down, so billing at the displayed floor still covers the plan. A hand estimate that rounds to the nearest cent can land one cent lower, which is expected.
Five inputs behind most surprising results
Each row changes one field from the illustration above and keeps everything else the same.
| What changed | Why the floor moves | Hourly floor |
|---|---|---|
| Nothing (the illustration above) | $80,000.00 to invoice across 1,200 billable hours. | $66.67 |
| Invoices eventually collected (%): 95 instead of 100 | Unpaid invoices have to be made up by the ones that are paid: $80,000 ÷ 0.95 = $84,210.53 to invoice. | $70.18 |
| Fees on collected payments (%): 3 instead of 0 | Payment or platform fees come off every collected dollar: $80,000 ÷ 0.97 = $82,474.23 to invoice. | $68.73 |
| Weeks with no billing each year: 8 instead of 4 | Holidays, sick days, slow weeks and full admin weeks all count. 44 working weeks leave 1,100 billable hours. | $72.73 |
| Billable hours per working week: 20 instead of 25 | Only hours you invoice count, not hours at the desk. 20 × 48 weeks = 960 billable hours. | $83.34 |
| A $1,200 software cost already in Business operating costs ($/year) is also typed into Personal benefits budget ($/year) | The same cost counted twice raises the amount to cover to $81,200. Enter each cost in one field only. | $67.67 |
Two more points explain many messages. The personal income goal is before personal income and self-employment taxes, so the floor pays that income before tax, and tax reserves come out of it; the self-employment tax guide covers how to plan for them. The collection percentage models invoices that are never paid, while invoices paid late affect cash flow instead; the invoicing and net terms guide covers payment timing.
If your result still differs from your own calculation after these checks, send the inputs and both numbers. That report can usually be answered in one reply.
An example report
A message laid out like this one carries everything needed to reproduce the result.
Subject: Calculator result check Page: https://billmyrate.com/ Personal income goal, before taxes ($/year): 75000 Business operating costs ($/year): 5000 Personal benefits budget ($/year): 0 Billable hours per working week: 25 Weeks with no billing each year: 4 Invoices eventually collected (%): 95 Fees on collected payments (%): 0 Result shown: $70.18/hr floor Result I expected: $66.67/hr ($80,000 ÷ 1,200 hours) Browser and device: Firefox on a Windows laptop; refreshing gave the same result.
In this illustration the answer is the collection field. At 95% collected, the plan has to invoice $84,210.53 to keep $80,000, and $84,210.53 ÷ 1,200 hours rounds up to $70.18. The second table above shows the same case.
Keep private details out of your message
Rounded or example figures are enough to reproduce almost any result. Do not send passwords, card or bank details, full tax returns or confidential client records. The file created by the calculator's Download plan (.txt) button lists every income, cost, hours and rate figure you entered, your project-check inputs and any comparisons you kept, so read it through before attaching it.
Privacy
The calculator runs in your browser, and its code does not send the numbers you type to Nathan Management or anywhere else. Google may display advertisements on this site; see the privacy policy for details.