CalSupport PRO Update Notices
Latest CalSupport PRO Version is 2026-1.1 Download now
CalSupport PRO 2026 has new 2026 federal tax tables reflecting the latest published IRS information, updated California tax data and SDI rates for 2026, and implements the new IRS Schedule 1-A formulas for No Tax on Tips, No Tax on Overtime, Auto Loan Interest, and No Tax on Social Security. All earlier versions will be obsolete after March 31, 2027. Results calculated by older programs will not be accurate and reports generated will not be accepted in court.
Registered users: the latest download will install over the earlier version without disturbing your data. Back up data first to be safe.
Unregistered or past-date registrations: CalSupport Pro will work as a demo until you register. How to register.
Latest Certification Letter. CalSupport is currently certified by the Judicial Council through March 31, 2027. This letter can be attached to Bench Reports when filed in court, and it states that per Rule of Court 5.275(j), CalSupport calculations must be accepted in all California courts. To download the letter, click here (PDF – 91 kb).
PRO UPDATE NOTES
WHAT’s NEW in version 2026-1.1
2026-1.1 – Federal & California Tax Updates; IRS Schedule 1-A Implementation – Updated the Federal tax data to reflect published 2026 information. Updated California tax data to reflect published 2025 information. California SDI rates reflect published 2026 information.
Updated the Low Income Adjustment to reflect the 2026 California Minimum Wage of $16.90 per hour.
Implemented Form 1040 Schedule 1-A to apply the IRS formulas for No Tax on Tips, No Tax on Overtime, Auto Loan Interest, and No Tax on Social Security. Modified the Federal Tax report to reflect their reporting location on Form 1040 Line 13b.
Implemented Form 1040 Schedule A Line 5e worksheet to apply the IRS formula for the State and Local Tax deduction cap.
Added overtime fields to the new spouse popup.
WHAT’s NEW in version 2026-1.1
2026-1.1 – Federal & California Tax Updates; IRS Schedule 1-A Implementation – Updated the Federal tax data to reflect published 2026 information. Updated California tax data to reflect published 2025 information. California SDI rates reflect published 2026 information.
Updated the Low Income Adjustment to reflect the 2026 California Minimum Wage of $16.90 per hour.
Implemented Form 1040 Schedule 1-A to apply the IRS formulas for No Tax on Tips, No Tax on Overtime, Auto Loan Interest, and No Tax on Social Security. Modified the Federal Tax report to reflect their reporting location on Form 1040 Line 13b.
Implemented Form 1040 Schedule A Line 5e worksheet to apply the IRS formula for the State and Local Tax deduction cap.
Added overtime fields to the new spouse popup.
WHAT’s NEW in version 2025-1.1
2025 – 1.1 – New Tax Bill; Tax Years – Implemented the “No tax on qualified tips” deduction: Excludes up to $25,000 in tips. Phases out above $150,000/$300,000 AGI. Not available using MFS status. Tips are entered on the Wages Calculator on Screen 2 Line 1 and on the New Spouse popup accessed on Screen 6 Line 1a
Implemented the “No tax on overtime compensation” deduction: Excludes $12,500/$25,000 in Overtime bump-up (e.g. the half portion of time and a half). Phases out above $150,000/$300,000 AGI. Not available using MFS status. Overtime is entered on the Wages Calculator on Screen 2 Line 1
Implemented the “Car loan interest deduction”; $10,000 max. Phases out above $100,000/$200,000 AGI. New eligible vehicle must have been purchased after Dec 31, 2024. Eligible vehicles must have final assembly in the U.S.
Implemented the “Senior” deduction; $6,000/$12,000 deduction; phases out above $75,000/$150,000 AGI; 6% above threshold. Not available using MFS status. Use Screen 7 Line 3 and the New Spouse popup accessed on Screen 6 Line 1a to claim the deduction.
Child tax credit increased to $2,200 per child, still $1,750 refundable.
Increased the Standard Deduction to $15,750 for singles, $31,500 for Married Filing Jointly and $23,625 for Married Filing Separately.
Implemented the new “SALT cap”, which is now $40,000; Phase out above $500,000 AGI with a floor of $10,000. The SALT cap is halved for Married Filing Separately status.
WHAT’s NEW in version 2025-1.0
Updated CalSupport to use gender neutral default nicknames. The program still uses the nicknames provided on Screen 1 when supplied. Reviewed the program and updated places where the nicknames were not being used.
Updated the Federal tax data to the published 2025 information.
Updated the California tax data to the published 2024 information. The California SDI rates reflect the published 2025 information. Starting in 2024, the SDI is no longer capped.
Updated the Low Income Adjust to the 2025 value of $2,860 based on the California minimum wage of $16.50 per hour.
CalSupport now checks for updates automatically in the background. A check occurs the first time on any given day that the program is started. Users are only reminded to check for updates if the program has failed to retrieve the version information file for a set number of days.
Add an automatic Check for Minimum Wage starting August 1st. If Sept 1st arrives before retrieving a minimum wage update, CalSupport tells the user that the minimum wage is out of date.
On the Timeshare Worksheet printout, change Mother and Father text to the user nicknames. Corrected the years and holiday dates.
Updated the address and phone number of Nolo Press Occidental.
WHAT’s NEW in version 2024-1.3
Updated CalSupport to fix the bug AND includes the 2025 minimum wage.
WHAT’s NEW in version 2024-1.2
Updated CalSupport to reflect legislative changes found in California Senate Bill 343 (SB 343). Most changes are slated to take effect September 1, 2024. CalSupport includes a new help section titled Senate Bill 343.
Updated the K-Factor used in the Child Support formula found in Family Code Section 4055. The K-Factor determines how much of the parents’ income is to be allocated to child support. Pro users can select the Pre-SB 343 formula, the SB 343 formula or (default) let the current date determine the formula (on the Preferences, Data and Sound dialog). Consumer users can select the Pre-SB 343 formula or (default) let the current date determine the formula (on the Preferences dialog).
For shared costs calculations, the default is proportional in SB 343 (versus 50/50 prior to SB 343). When importing an old file, proportional sharing will always be selected. The user can override to select 50/50 apportionment from the Shared Costs screen.
LIA threshold is now based on the California Minimum Wage. The minimum wage is updated annually by the California Labor Relations Board. All uses can check for an updated minimum wage value by clicking on the Help->Update Minimum Wage menu item. Pro uses can select the LIA Threshold from the Calculation Options (Screen 9). Consumer users can clear any LIA selection from the Calculation Options (Screen 9). When loading files saved by CalSupport 2024-1.1 or earlier, any specific LIA selections will be cleared.
The Tax Year drop list on the Pro Data Preferences page has been reordered; Only used in Pro Prefs. Data and Preferences.
WHAT’s NEW in version 2024-1.1
PRO Only Bug: Fixed the text in the Screen 9 Line 1b. drop list. The text indicated that the LIA value from March 1, 2023 was being used. This bug only affected the user interface. All calculations and printouts were correctly using the LIA value from March 1, 2024.
WHAT’s NEW in version 2024-1.0
Updated the Federal tax data to the published 2024 information. Updated the California tax data to the published 2023 information. The California SDI rates reflect the published 2024 information. In 2024, the SDI is no longer capped.
Updated the Low Income Adjust to the 2024 value of $2,137.
Modified the Save As logic to eliminate the second request to save the file.
Removed the By Phone, By Fax and By Mail registration options. All registrations should now be done using the Online option.
Updated the Check For Update URL from http to https. Updated the Run After Download logic to open the file explorer if CS couldn’t launch the installer.
WHAT’s NEW in version 2023-1.3
Fixed an error in the Earned Income Tax Credit (EIC) calculation. For cases with a single child, with earned income between $21,600 and $46,550, the EIC calculated by CalSupport was $990 less than the actual EIC amount.
WHAT’s NEW in version 2023-1.2
Added a report (printout) for the information on the Wages Calculator; i.e. the parents’ earned income Monthly, Annually, Hourly, etc. The report is available through the Reports menu, the Reports Selector and directly from the Wages Calculator popup.
Fixed the Reports -> Support Summary linkage; Version 2023-1.1 was bringing up the Timeshare Worksheet.
WHAT’s NEW in version 2023-1.0
Updated the Federal tax data to the published 2023 information. Updated the California tax data to the published 2022 information. The California SDI rates reflect the published 2023 information.
Restored Screen 7 Line 7 (Apply the Additional Child Tax Credit) checkbox. The option to forego the ACTC has been restored to Form 1040 Schedule 8812.
Corrected Additional Child Tax Credit (ACTC) bug; The ACTC is now calculated as part of the CTC (Child Tax Credit). Errors sometimes occurred when the CTC was NOT applied.
Removed “Withholding Allowances” from the Expert user interface and “Bench Report – Input Information” printout since the pseudo W-4 calculations are no longer supported.
WHAT’s NEW in version 2022-1.1
Corrected Additional Child Tax Credit (ACTC) bug; The ACTC is now calculated as part of the CTC (Child Tax Credit). Errors sometimes occurred when the CTC was NOT applied.
Fixed the “&&” typo on Screen 1.
Changed the “less than 50%” error message to read “less than or equal to 50%”.
Fixed the “time spent” typo on Screen 1 error message.
WHAT’s NEW in version 2022-1.0
Updated the tax tables for Tax Year 2021 and 2022. The estimated tax tables for 2022 are based on the figures published by the IRS and California for 2022 plus 2021 values where 2022 values are not available. Updated the LIA to start using the 2022 figure after March 31st, 2022, the new LIA’s effective date.
Corrected the State and Local Tax deduction limit for the Married Filing Single status to use $5,000 instead of the $10,000 cap used by all other filing statuses.
Pro-Only: Updated the 2021 tax tables to reflect the increase in the EIC for taxpayers without children. Note: this increase is ONLY for tax year 2021.
Pro-Only: Updated the 2021 Child Tax Credit and Additional Child Tax Credit to match the 2021 Schedule 8812. Added fields to enter the number of children under the age of six to the ‘CTC Adjustments’ popup.
Removed the pseudo-W-4 printout. It was long out of date.
WHAT’s NEW in version 2021-1.1
Updated the reports (printouts) to show the LIA range and threshold in all places that show guideline child support. The affected reports are:
Support Summary (page 1), Bench Report – Input Information (Pro only), Bench Report – Support Order, Bench Report – Findings and Order (Pro only), Net Income Report, Child Support Formula.
Updated the tax tables for Tax Year 2020 and 2021. The estimated tax tables for 2020 are based on the figures published by the IRS and California for 2021 plus 2020 values where 2021 values are not available.
Updated the line numbers on the pseudo-forms (i.e. the Federal Form 1040, Schedule 1, Schedule A and Form 6251, and the California Form 540 and Form
3506) in the Tax Reports to reflect the revisions made for the 2020 tax forms.
WHAT’s NEW in version 2020-1.2
Changed our address from our old Santa Cruz, CA address to the current one in Carlsbad, CA
Added the ability to read a data file created by CalSupport Pro to specify the number of Additional Income pages that are printed. The consumer version can create the number of pages specified by the data file, or it can reset the number of printed pages to the default of one page.
WHAT’s NEW in version 2020-1.1
Added a check box on the popup from Screen 7 Line 9 to indicate whether or not to apply the Young Child Tax Credit. The default is not to apply the credit since a child support situation lasts only until the child is 18 but the Young Child Tax Credit only applies until the child is 6.
Fixed the California Earned Income Credit to include self-employment income
Updated the 2020 California SDI maximum taxable amount to $122,909
Updated the 2020 Social Security maximum taxable earnings to $137,700
Updated the 2020 Qualified Business Income Deduction cap to $163,300 ($326,600 if marred filing jointly)
Added the California Youth Child Tax Credit to the California tax calculation
Corrected the Federal Alternative Minimum Tax calculation to consider the Qualified Business Income Deduction
WHAT’s NEW in version 2020-1.0
Updated the tax tables for Tax Year 2019 and 2020. The estimated tax tables for 2020 are based on the figures published by the IRS and California for 2020. Where 2020 values were not available we used 2019 values.
Updated the W-4 Report to the new form/calculations.
Changed the Low Income Adjustment amount to reflect the March 1st, 2020 value. CalSuppport automatically switches the amount on that date.
WHAT’s NEW in version 2019-1.4
Removed the “(deductible)” and ”(non-deductible)” text from the first block on the first page of the Support Summary. Since spousal support for a divorce filed after December 31, 2018 is not deductible on the Federal return but is still deductible on the California return, the text was often incorrect and confusing.
When Line 2c. “No Spousal Support” is selected on Screen 9 (calculation options), the Support Summary printout now reads, “Parties have agreed to forego spousal support”, instead of the spousal support formula’s county of filing.
Fixed an update issue with the calculation options screen. The errant behavior was that a switching from Screen 9 to an output report failed to update the calculation before displaying the report. Version 1.4 fixes this behavior.
WHAT’s NEW in version 2019-1.3
Added the Other Dependent Credits to the Child Tax Credit calculations. “Other Qualifying Dependents” are entered on the Child Tax Credit popup on Screen 7.
Corrected the calculation of the refundable portion of the Child Tax Credit.
Added the Qualified Business Income Deduction popup, calculation and help entry. The calculation is for the simplified worksheet found in the instructions for Federal Form 1040. The popup indicates circumstances when the simplified form is not sufficient. CalSupport warns the user if the AGI changes to a value above the threshold that requires the full form found in IRS Publication 535. To use this feature go to Entry > 13 Tax Entries > H Qualified Business Income Ded.
Fixed the California Renter’s Credit to be $120 for MFJ, Qualified Widower or Head of Household.
Corrected the upper income limit calculation.
WHAT’s NEW in version 2019-1.2
CalSupport Pro Version 2019-1.2 fixed a bug that only applied to cases that involved self-employment income.
WHAT’s NEW in version 2019-1.1
CalSupport PRO Version 2019-1.1 has been updated with the 2019 Low Income Adjustment figure, effective March 1st, 2019. The program will automatically switch to this amount on March 1st, 2019.
WHAT’s NEW in version 2019-1.0
CalSupport PRO Version 2019-1.0 has been updated with the 2019 tax tables.
It also includes some new input options in the Tax Deductions screen at Line 4, where you can choose to enter spousal support as deductible if applicable. Be sure to read the Tip at the bottom of the screen when on Line 4, to make sure you are making the correct selection.
LAST YEAR’S NEWS
WHAT’s NEW in version 2018-1.4
Fixed the Federal tax rates for the Head of Household filing status.
Fixed the uninitialized California subtraction from earned income, which appears on the California Earned Income Tax Credit popup Line 2, which is accessed through the Screen 7 Line 8 “Change” button.
WHAT’s NEW in version 2018-1.3
Changed the default tax year to 2018 and updated the tax calculations to reflect the new tax law. These changes include:
Updated the tax tables.
Changed the CTC amount to $2,000 per child. Made the CTC refundable, at 15% of earnings minus $4,500, up to $1,400. Changed the CTC phase-out amount to $400,000 for Married Filing Jointly and $200,000 for all others. Moved Line 52 to the refundable tax credits section on the pseudo-1040 printout.
Removed the personal exemption amount. Removed lines 6d and 42 from the pseudo-1040 printout. Removed references to exemption from the other printouts.
Removed the Additional Child Support Credit. Removed line 67 from the pseudo-1040 printout.
Modified Schedule A to limit Line 9, the State and Local Tax, to $10,000.
Modified the Alternative Minimum Tax to the new exemption levels ($70,300 for single or Head of Household, $109,400 for Married Filing Jointly and $54,700 for Married Filing Separate). Modified the exemption phase out base to $1,000,000 for Married Filing Jointly and $500,000 for all others. Updated the 26% / 28% threshold to $95,750 for Married Filing Separate and $191,500 for all others.
Modified numerous screens and printouts to reflect the new changes.
Adjusted the IRS Earned Income Credit for tax year 2018
WHAT’s NEW in version 2018-1.2
Users who tried to register after February 28, 2018 using the online registration option were not able to complete their registration. This has been fixed, and the online registration system is working correctly now.
WHAT’s NEW in version 2018-1.1
Fixed the Preview button in the Additional Income popup screen.
WHAT’s NEW in version 2018-1.0
Updated the tax calculator – to use tax year 2017 values. The law specifies that the last complete tax year, which is now 2017, should be used when calculating child support. The estimated tax tables for 2018 are based on the tax tables for 2017, with the exception of the Federal FICA and the California SDI limits and rates.
Fixed the tips text on the Calculation Options screen so that it matches the active line.
Updated the Low Income Adjustment (LIA) threshold amount. The new LIA amount is $1,692.00.