IRC § 338 + Rev. Rul. 59-60
Business Acquisition Calculators
Acquisition-side tools: IRC § 338(h)(10) asset-vs-stock tax comparison, business valuation under Rev. Rul. 59-60 methodology (SDE / EBITDA multiples by industry with DLOM and DLOC discounts), and the gross-up math that closes a deal.
Anchored to: IRC §§ 338, 1060, 197, 6166; Rev. Rul. 59-60, 65-193
3 calculators live. Reviewed against current statute and regulation. Last updated 2026-05-16.
Most-used calculators
IRC § 338 (election to treat qualified stock purchase as deemed asset acquisition)
IRC § 338(h)(10) Asset-vs-Stock Sale Calculator
Model the IRC § 338(h)(10) joint buyer/seller election that recasts a qualified stock purchase as a deemed asset sale: the seven-class allocation under IRC § 1060 (Class I cash → Class VII goodwill), the ordinary-vs-capital recharacterization on the seller side (ordinary on receivables/inventory/§ 1245 and § 1250 recapture, capital on real property § 1231 and goodwill), the buyer's NPV benefit from the step-up under 15-year § 197 amortization, and the break-even gross-up that compensates the seller for the incremental tax cost. Eligibility limited to S-corps, members of consolidated/affiliated groups, and qualified subchapter S subsidiaries — freestanding C-corps require § 338(g) (unilateral) or an F-reorganization.
Rev. Rul. 59-60 (eight-factor framework for valuing closely-held stock — nature of the business
Business Valuation Multiple Calculator
Screen a closely-held business value range under the Rev. Rul. 59-60 market approach: trailing-twelve-month SDE or EBITDA times an industry-specific multiple (BizBuySell / Pratt's Stats / DealStats benchmarks for SaaS, professional services, retail, manufacturing, restaurant, construction, and healthcare), risk-adjusted for key-person dependency, customer concentration above 20%, and recurring-revenue mix, then discounted multiplicatively for lack of marketability (DLOM, 15-35% Mandelbaum range) and lack of control (DLOC, 10-25%), with debt subtracted to produce an equity-value range. Reports the low / mid / high enterprise value, equity after debt, the implied effective multiple, and the underlying industry comp range. Tool, not advice — for estate, gift, ESOP, or litigation valuations, commission a credentialed appraiser (ABV / ASA / CVA) with a full Rev. Rul. 59-60 weighted opinion.
IRC § 6166 (full section — closely-held business estate tax installment election)
IRC § 6166 Closely-Held Business Estate Tax Installment Calculator
Screen an estate's eligibility for IRC § 6166 installment payment of the federal estate tax attributable to a closely-held business interest — the 35% qualifier under § 6166(a)(1) (closely-held value vs. Adjusted Gross Estate), the deferrable-tax allocation, the 2% special interest rate under § 6601(j) on the tax attributable to the first $1,850,000 of closely-held value (2025 figure, indexed under § 6166(b)(7)) with the remainder at 45% of the § 6621 underpayment rate, the 14-year payment schedule (4 years interest-only under § 6166(f) followed by 10 annual installments under § 6166(a)(3)), the acceleration triggers under § 6166(g), and the NPV savings vs. paying the deferrable tax up front. Multi-business aggregation under § 6166(c) requires each aggregated business to be at least 20% of the decedent's interest in that business. Tool, not advice — § 6166 elections are irrevocable, require a timely-filed Form 706, and carry security/lien obligations under § 6324A; engage estate counsel and a CPA before relying on the election.
Find your calculator
Grouped by who tends to use each tool. Many calculators serve more than one audience.
For unit owners
Verify a notice, check a fine, or understand the lien exposure on a delinquent account before acting.
IRC § 338(h)(10) Asset-vs-Stock Sale Calculator
Model the IRC § 338(h)(10) joint buyer/seller election that recasts a qualified stock purchase as a deemed asset sale: the seven-class allocation under IRC § 1060 (Class I cash → Class VII goodwill), the ordinary-vs-capital recharacterization on the seller side (ordinary on receivables/inventory/§ 1245 and § 1250 recapture, capital on real property § 1231 and goodwill), the buyer's NPV benefit from the step-up under 15-year § 197 amortization, and the break-even gross-up that compensates the seller for the incremental tax cost. Eligibility limited to S-corps, members of consolidated/affiliated groups, and qualified subchapter S subsidiaries — freestanding C-corps require § 338(g) (unilateral) or an F-reorganization.
Business Valuation Multiple Calculator
Screen a closely-held business value range under the Rev. Rul. 59-60 market approach: trailing-twelve-month SDE or EBITDA times an industry-specific multiple (BizBuySell / Pratt's Stats / DealStats benchmarks for SaaS, professional services, retail, manufacturing, restaurant, construction, and healthcare), risk-adjusted for key-person dependency, customer concentration above 20%, and recurring-revenue mix, then discounted multiplicatively for lack of marketability (DLOM, 15-35% Mandelbaum range) and lack of control (DLOC, 10-25%), with debt subtracted to produce an equity-value range. Reports the low / mid / high enterprise value, equity after debt, the implied effective multiple, and the underlying industry comp range. Tool, not advice — for estate, gift, ESOP, or litigation valuations, commission a credentialed appraiser (ABV / ASA / CVA) with a full Rev. Rul. 59-60 weighted opinion.
IRC § 6166 Closely-Held Business Estate Tax Installment Calculator
Screen an estate's eligibility for IRC § 6166 installment payment of the federal estate tax attributable to a closely-held business interest — the 35% qualifier under § 6166(a)(1) (closely-held value vs. Adjusted Gross Estate), the deferrable-tax allocation, the 2% special interest rate under § 6601(j) on the tax attributable to the first $1,850,000 of closely-held value (2025 figure, indexed under § 6166(b)(7)) with the remainder at 45% of the § 6621 underpayment rate, the 14-year payment schedule (4 years interest-only under § 6166(f) followed by 10 annual installments under § 6166(a)(3)), the acceleration triggers under § 6166(g), and the NPV savings vs. paying the deferrable tax up front. Multi-business aggregation under § 6166(c) requires each aggregated business to be at least 20% of the decedent's interest in that business. Tool, not advice — § 6166 elections are irrevocable, require a timely-filed Form 706, and carry security/lien obligations under § 6324A; engage estate counsel and a CPA before relying on the election.
For buyers, agents & lenders
Affordability and transaction-cost calculators that surface the jurisdiction-specific line items most cost estimators miss.
For attorneys
Statutory citation-level analysis suitable for client memoranda and procedural verification.
IRC § 338(h)(10) Asset-vs-Stock Sale Calculator
Model the IRC § 338(h)(10) joint buyer/seller election that recasts a qualified stock purchase as a deemed asset sale: the seven-class allocation under IRC § 1060 (Class I cash → Class VII goodwill), the ordinary-vs-capital recharacterization on the seller side (ordinary on receivables/inventory/§ 1245 and § 1250 recapture, capital on real property § 1231 and goodwill), the buyer's NPV benefit from the step-up under 15-year § 197 amortization, and the break-even gross-up that compensates the seller for the incremental tax cost. Eligibility limited to S-corps, members of consolidated/affiliated groups, and qualified subchapter S subsidiaries — freestanding C-corps require § 338(g) (unilateral) or an F-reorganization.
Business Valuation Multiple Calculator
Screen a closely-held business value range under the Rev. Rul. 59-60 market approach: trailing-twelve-month SDE or EBITDA times an industry-specific multiple (BizBuySell / Pratt's Stats / DealStats benchmarks for SaaS, professional services, retail, manufacturing, restaurant, construction, and healthcare), risk-adjusted for key-person dependency, customer concentration above 20%, and recurring-revenue mix, then discounted multiplicatively for lack of marketability (DLOM, 15-35% Mandelbaum range) and lack of control (DLOC, 10-25%), with debt subtracted to produce an equity-value range. Reports the low / mid / high enterprise value, equity after debt, the implied effective multiple, and the underlying industry comp range. Tool, not advice — for estate, gift, ESOP, or litigation valuations, commission a credentialed appraiser (ABV / ASA / CVA) with a full Rev. Rul. 59-60 weighted opinion.
IRC § 6166 Closely-Held Business Estate Tax Installment Calculator
Screen an estate's eligibility for IRC § 6166 installment payment of the federal estate tax attributable to a closely-held business interest — the 35% qualifier under § 6166(a)(1) (closely-held value vs. Adjusted Gross Estate), the deferrable-tax allocation, the 2% special interest rate under § 6601(j) on the tax attributable to the first $1,850,000 of closely-held value (2025 figure, indexed under § 6166(b)(7)) with the remainder at 45% of the § 6621 underpayment rate, the 14-year payment schedule (4 years interest-only under § 6166(f) followed by 10 annual installments under § 6166(a)(3)), the acceleration triggers under § 6166(g), and the NPV savings vs. paying the deferrable tax up front. Multi-business aggregation under § 6166(c) requires each aggregated business to be at least 20% of the decedent's interest in that business. Tool, not advice — § 6166 elections are irrevocable, require a timely-filed Form 706, and carry security/lien obligations under § 6324A; engage estate counsel and a CPA before relying on the election.
Or filter by calculator type
All 3 calculators in this cluster, organized by what they compute. Use the chips to narrow to a specific area.
- Business Finance
IRC § 338(h)(10) Asset-vs-Stock Sale Calculator
Model the IRC § 338(h)(10) joint buyer/seller election that recasts a qualified stock purchase as a deemed asset sale: the seven-class allocation under IRC § 1060 (Class I cash → Class VII goodwill), the ordinary-vs-capital recharacterization on the seller side (ordinary on receivables/inventory/§ 1245 and § 1250 recapture, capital on real property § 1231 and goodwill), the buyer's NPV benefit from the step-up under 15-year § 197 amortization, and the break-even gross-up that compensates the seller for the incremental tax cost. Eligibility limited to S-corps, members of consolidated/affiliated groups, and qualified subchapter S subsidiaries — freestanding C-corps require § 338(g) (unilateral) or an F-reorganization.
- Business Finance
Business Valuation Multiple Calculator
Screen a closely-held business value range under the Rev. Rul. 59-60 market approach: trailing-twelve-month SDE or EBITDA times an industry-specific multiple (BizBuySell / Pratt's Stats / DealStats benchmarks for SaaS, professional services, retail, manufacturing, restaurant, construction, and healthcare), risk-adjusted for key-person dependency, customer concentration above 20%, and recurring-revenue mix, then discounted multiplicatively for lack of marketability (DLOM, 15-35% Mandelbaum range) and lack of control (DLOC, 10-25%), with debt subtracted to produce an equity-value range. Reports the low / mid / high enterprise value, equity after debt, the implied effective multiple, and the underlying industry comp range. Tool, not advice — for estate, gift, ESOP, or litigation valuations, commission a credentialed appraiser (ABV / ASA / CVA) with a full Rev. Rul. 59-60 weighted opinion.
- Business Finance
IRC § 6166 Closely-Held Business Estate Tax Installment Calculator
Screen an estate's eligibility for IRC § 6166 installment payment of the federal estate tax attributable to a closely-held business interest — the 35% qualifier under § 6166(a)(1) (closely-held value vs. Adjusted Gross Estate), the deferrable-tax allocation, the 2% special interest rate under § 6601(j) on the tax attributable to the first $1,850,000 of closely-held value (2025 figure, indexed under § 6166(b)(7)) with the remainder at 45% of the § 6621 underpayment rate, the 14-year payment schedule (4 years interest-only under § 6166(f) followed by 10 annual installments under § 6166(a)(3)), the acceleration triggers under § 6166(g), and the NPV savings vs. paying the deferrable tax up front. Multi-business aggregation under § 6166(c) requires each aggregated business to be at least 20% of the decedent's interest in that business. Tool, not advice — § 6166 elections are irrevocable, require a timely-filed Form 706, and carry security/lien obligations under § 6324A; engage estate counsel and a CPA before relying on the election.
Calculators live
Across statute, regulation, and policy
Statute-cited
Every formula links its source
Unit tests
Every formula has a regression suite
Formula transparency
Deterministic math, no hidden weights
No paywall
Every calculator, no paid tier
How these calculators are maintained
Every YMYL calculator is reviewed quarterly and after every legislative session in the jurisdiction it covers. Citations are link-validated monthly against the relevant statute and regulation websites. The methodology page documents the discipline.
Read the editorial methodology →