How the two apps fit together
Fjordbill is an invoice and estimate app: payment links, reminders, expenses you can bill back, and reports. SovereignLedger is the tax companion. It scans receipts, maps them to Schedule C categories, estimates self-employment tax and quarterly payments, and surfaces legal tax-planning tips (home office, mileage, Section 179, SEP-IRA or Solo 401(k), self-employed health insurance) with IRS sources and a “not tax advice” disclaimer.
Used together, paid Fjordbill invoices export as income into SovereignLedger, so the tax math starts from money you actually invoiced, minus expenses you actually documented. SovereignLedger prepares a filing pack. It does not e-file with the IRS, and neither app is a CPA or tax preparer. Both are coming soon to iPhone and Android; there is no store listing to open yet.
What each app can be worth on its own
Fjordbill alone: getting paid, not a tax deduction
Fjordbill’s value is mostly cash flow and time: invoices go out, clients can pay online, and reminders follow up. That is not the same thing as lowering your tax bill.
- Intuit QuickBooks’ 2026 Small Business Late Payments Report (survey of US owners of businesses with 0–250 employees, including a December 2025 sample of 1,305 owners) found that 59% had invoices overdue by 30 days or more, up from 47% the prior year, and that businesses waiting on unpaid invoices were owed $17,700 on average. That average is for small businesses in the survey, not a typical freelancer, and it is not money Fjordbill is claiming to collect.
- The same report found that 39% of owners said one late payment made it hard to cover payroll or bills in the past year, that 27% said a missed payment under $5,000 caused strain, and that processing delays led 18% to pay a bill late and incur a fee or penalty.
- FreshBooks states on its own site that online payments help businesses “get paid an average of 18 days faster.” That is a FreshBooks company figure. The page does not publish the study’s date, sample, or methods, so it should not be repeated as a Fjordbill result. Source: Introducing: Payments by FreshBooks.
An illustration, not a measured Fjordbill outcome: if someone invoices $60,000 evenly over a year and those payments arrived 18 days sooner, the extra cash on hand would average about $60,000 × 18 ÷ 365 = $2,959. If that gap would otherwise have been carried on a credit card at the Federal Reserve’s 22.36% APR for accounts assessed interest (G.19, commercial bank credit-card plans, third quarter of 2026, value shown for August), the interest on that average balance would be about $662 a year. That math only applies if the person actually would have borrowed at that rate; many people would not. Source for the APR: Federal Reserve G.19, release dated November 6, 2026.
We did not find a current, well-documented statistic for hours saved by invoice reminders, or for the share of freelance invoices that are never sent at all. Those gaps are left blank rather than filled in.
SovereignLedger alone: deductions you already qualify for, and penalties you can avoid
SovereignLedger does not create deductions. It helps you notice, document and calculate ones that already exist in the tax law, and to estimate quarterly payments so you are less likely to owe the underpayment penalty. The tax savings only happen if you qualify, keep the required records, and actually claim the items (or actually fund a retirement plan).
- Self-employment tax is 15.3% (12.4% Social Security and 2.9% Medicare) on net earnings, which are generally 92.35% of Schedule C net profit. For 2026 the Social Security portion applies to the first $184,500 of combined wages and net earnings. Half of the SE tax is deductible when figuring adjusted gross income. Source: IRS, Self-employment tax and 2026 Schedule SE.
- The simplified home-office method is $5 per square foot, up to 300 square feet ($1,500 maximum), and only if the space is used regularly and exclusively for business. Source: IRS, Simplified option for home office deduction.
- The 2026 standard mileage rate for business use is 72.5 cents a mile from January 1 through June 30, and 76 cents a mile from July 1 through December 31. Source: IRS, Standard mileage rates.
- You may owe an estimated-tax underpayment penalty if you do not pay enough tax during the year. Most people avoid it by owing less than $1,000 after withholding and credits, or by paying at least 90% of the current year’s tax or 100% of the prior year’s tax (110% if prior-year AGI was more than $150,000, or $75,000 if married filing separately). Source: IRS Topic no. 306 and IRS estimated-tax FAQs.
- That penalty uses the IRS underpayment interest rate, compounded daily. For 2026 the underpayment rate is 7% in the first, third and fourth quarters and 6% in the second quarter. Source: IRS quarterly interest rates.
- In an audit the IRS asks for records that support the income and deductions on the return: receipts with notes on what they were for, bills, and mileage logs with dates, business purpose and miles. Source: IRS, Audits Records Request. We did not find a reliable official dollar figure for “what documented receipts are worth in an audit,” so we do not invent one.
A 2016 Intuit press release said QuickBooks Self-Employed users found “on average $4,340 in potential tax savings per year.” That figure is almost a decade old, is a company’s product claim, and is not used in our examples or marketing headlines. Source: Intuit, December 15, 2016.
Using both: income and expenses in one place
Together, the apps can make the tax math more accurate: estimated payments are based on net profit (invoiced income minus documented expenses), not on gross receipts alone. That can cut the underpayment penalty if you would otherwise have paid too little, and it can stop you over-reserving cash if you would otherwise have ignored deductions. The federal tax savings in the examples below come from the deductions themselves, which you could also claim without these apps if your records were just as complete.
Who a “typical” sole proprietor is, in IRS data
The IRS Statistics of Income, tax year 2023 (money amounts in thousands of dollars in the source table), reports 31,125,909 nonfarm sole-proprietorship returns, $2.063 trillion of business receipts, and $377.2 billion of net income less deficit. That is about $66,285 of receipts and $12,119 of net income per return, including businesses with losses. Among the 21,411,462 returns with net income, average net income is about $24,790.
Professional, scientific and technical services is a closer match for many freelancers: 3,912,417 returns, about $63,957 of average receipts and $25,388 of average net income less deficit. Among the 2,709,097 profitable returns in that sector, average net income is about $42,711. Source: IRS SOI Table 1, tax year 2023 (Excel), listed from SOI nonfarm sole proprietorship statistics.
MBO Partners’ 2025 State of Independence study counts 72.9 million US independents and 5.6 million who earned more than $100,000, and compares that group with “the typical U.S. worker salary of approximately $66,000.” The report page we reviewed does not publish a median income for all independent workers, so we do not state one. Source: MBO Partners, 2025 State of Independence.
That is why the examples below are labeled scenarios, not “the average Fjordbill user.” Example A uses the $60,000 net-profit freelancer many people have in mind. Example B sits close to the IRS average for a profitable professional sole proprietorship. Example C is a higher earner, still under the 2026 QBI threshold for single filers in the draft Form 8995 instructions ($201,750 of taxable income before the QBI deduction).
Three worked examples, tax year 2026
Shared assumptions, all labeled as assumptions:
- Tax year 2026, single filing status, no dependents, no other income, no state income tax, no credits, and the $16,100 single standard deduction from IRS IR-2025-103.
- Ordinary tax is computed from the 2026 single brackets in that same IRS release: 10% up to $12,400, 12% over $12,400, 22% over $50,400, 24% over $105,700.
- Qualified business income deduction of up to 20% of QBI, limited to 20% of taxable income minus net capital gain, from the IRS QBI page. QBI here equals net profit minus one-half of SE tax, minus any self-employed health insurance or SEP contribution. 2026 single threshold of $201,750 and joint threshold of $403,500 are taken from the draft 2026 Instructions for Form 8995; those instructions were still a draft when we read them.
- The home office is assumed to meet the regular and exclusive use tests. Miles are assumed to be substantiated business miles, split evenly between the first and second halves of 2026. Self-employed health insurance is assumed to be deductible on Form 7206 / Schedule 1 and, under current rules, not to reduce net earnings for SE tax. Retirement contributions are assumed to be actually funded.
- Figures are rounded to the nearest dollar in the tables. Totals may differ from a tax-preparer return by a dollar because of rounding. This is an illustration, not tax advice, and not a forecast of what you will save.
Example A — $60,000 net profit
| Item | Amount |
|---|---|
| Simplified home office, 200 × $5 | $1,000 |
| Mileage, 2,000 × $0.725 + 2,000 × $0.76 | $2,970 |
| Extra Schedule C deductions | $3,970 |
| Net profit after those deductions | $56,030 |
| Federal income tax + SE tax before the extra deductions | $12,037 |
| Federal income tax + SE tax after | $11,122 |
| Reduction in 2026 federal income tax + SE tax | $915 |
Of that $915, about $561 is lower self-employment tax and about $354 is lower income tax after the QBI deduction. The combined effective federal saving on these Schedule C deductions is about 23.05% in this 12% ordinary-tax bracket. If this person paid no estimated tax and then paid the balance on April 15, 2027, an approximate Form 2210-style interest charge on 90% of the $12,037 tax, using 2026 quarterly rates and assuming the first-quarter 2027 rate stays 7% (it has not been published yet), is about $511. Paying timely quarterly estimates can reduce that penalty to zero if a safe harbor is met. Daily compounding is approximated with a 365-day year; the IRS official factor tables may differ by a few dollars.
Example B — $43,000 net profit, near the IRS professional average
| Item | Amount |
|---|---|
| Simplified home office, 150 × $5 | $750 |
| Mileage, 1,500 × $0.725 + 1,500 × $0.76 | $2,228 |
| Extra Schedule C deductions | $2,978 |
| Federal income tax + SE tax before | $8,118 |
| Federal income tax + SE tax after | $7,432 |
| Reduction in 2026 federal income tax + SE tax | $686 |
The combined effective federal saving on these deductions is again about 23.05% in this bracket. An approximate underpayment addition if no estimates were paid on the $8,118 tax, on the same method as Example A, is about $345.
Example C — $120,000 net profit, established consultant
| Item | Amount |
|---|---|
| Home office, 300 × $5, plus mileage $4,455 | $5,955 |
| Federal tax + SE tax on $120,000 net | $28,462 |
| After the $5,955 of Schedule C deductions | $26,646 |
| Saving from home office + mileage | $1,815 |
| Additional income-tax saving if $6,000 of SE health insurance is deductible | $1,056 |
| Additional income-tax saving if a $10,000 SEP-IRA is funded | $1,760 |
| Combined reduction if all of the above apply | $4,631 |
In the 22% ordinary-tax bracket, extra Schedule C deductions save about 30.5% federally here (SE tax plus income tax after QBI). Health insurance and SEP contributions do not reduce SE tax in this calculation; they reduce income tax and QBI. The SEP and health-insurance savings exist only if the premiums are paid and the SEP is actually funded. An approximate underpayment addition if no estimates were paid on the $28,462 tax, on the same method as Example A, is about $1,209. After the Schedule C deductions, 90% of the remaining tax is lower, and the approximate penalty falls by about $77; the larger effect of better records is the $1,815 of tax, not the penalty line.
What is safe to say in marketing, and what is not
Safe, if framed as an example
- Naming official 2026 IRS rates: 15.3% SE tax, the two mileage rates, $5 per square foot up to 300, quarterly due dates, and the 90% / 100% / 110% estimated-tax safe harbors.
- “In this worked example, these deductions lower 2026 federal income tax and self-employment tax by about $915.” Always label the assumptions and link to the math.
- Describing late payments with the QuickBooks 2026 survey, clearly as a small-business survey, not as a Fjordbill user result.
- “Coming soon” for App Store and Google Play, with no live store badges or links to listings that do not exist yet.
- A visible “not tax advice” disclaimer, and a statement that SovereignLedger does not e-file with the IRS.
Not safe
- “Save $915 with SovereignLedger” or “users save $X a year.” We have no product outcomes, and the $915 is one illustration.
- Using Intuit’s 2016 “$4,340 potential tax savings” as a current or typical result.
- Repeating FreshBooks’ “18 days faster” as a Fjordbill guarantee. It can be cited as FreshBooks’ own figure, with the limits of that source.
- Applying the QuickBooks $17,700 unpaid-invoice average to freelancers as if it were typical for them.
- Any dollar “audit insurance” claim, or self-reported audit-rate survey figures that do not match official IRS Data Book coverage rates.
- Presenting SEP, Solo 401(k) or health-insurance savings as automatic. They require contributions or premiums, and eligibility rules apply.
Sources
Every figure on this page is tied to one of the links below. Pages were opened or downloaded for this write-up. The Intuit QuickBooks late-payments URL was retrieved successfully in our research browser; a direct download from one of our servers was blocked, which is noted for honesty, not as a doubt that the page exists.
- IRS, Self-employment tax (Social Security and Medicare taxes)
- IRS, 2026 Schedule SE (Form 1040)
- IRS, Standard mileage rates
- IRS, Simplified option for home office deduction
- IRS IR-2025-103, tax year 2026 inflation adjustments
- IRS, Qualified business income deduction
- IRS, draft 2026 Instructions for Form 8995
- IRS, draft 2026 Instructions for Schedule C (Section 179 limits)
- IRS Topic no. 306, Penalty for underpayment of estimated tax
- IRS, Estimated tax — Individuals
- IRS, Underpayment of estimated tax by individuals penalty
- IRS, Quarterly interest rates
- IRS IR-2026-98, fourth-quarter 2026 interest rates
- IRS Publication 505, Tax Withholding and Estimated Tax
- IRS, About Form 7206, Self-Employed Health Insurance Deduction
- IRS, Retirement plans for self-employed people
- IRS, COLA increases for dollar limitations on benefits and contributions
- IRS, Audits Records Request
- IRS SOI, Nonfarm sole proprietorship statistics
- IRS SOI Table 1, tax year 2023 (Excel)
- Intuit QuickBooks, 2026 Small Business Late Payments Report
- FreshBooks, Introducing: Payments by FreshBooks
- Federal Reserve, Consumer Credit G.19 (November 6, 2026 release)
- MBO Partners, 2025 State of Independence in America
- Intuit press release, December 15, 2016 (dated product claim, not used as a current average)
SovereignLedger and Fjordbill are products of Scandinavia Consulting LLC. This page is general information for US sole proprietors and freelancers. It is not tax, legal or accounting advice, and it is not a substitute for a CPA, Enrolled Agent or attorney who knows your facts. Tax law changes, and draft IRS instructions can change before they are final. Coming soon to the App Store and Google Play; those names are trademarks of Apple Inc. and Google LLC. Fjordbill is not affiliated with or endorsed by the IRS, Intuit, FreshBooks, MBO Partners or the Federal Reserve.